Once the act's theme starts to be heard from the Yamaha YM-2151, the screen will start scrolling inward as it comes to a barrage of five barriers and six more police cars, that have twelve more police officers standing around them; it will then jump over them as it comes to the gate of the quantum physics laboratory, which will explode as it stops scrolling inward, and comes to another barrage of three Biker Zaku and seven Zaku who are firing shots at you. Once you have fired enough shots at each of them to kill them, three Mobile Armours will fly into view from the right and left sides of the screen and start firing missiles at you - and once you have fired enough shots at each of them to kill them, the screen will continue scrolling inward, then scroll to the right as three more Biker Zaku fly into view from the left side of the screen, while throwing grenades at you. Once you have fired a shot at each of these to kill them, the screen will start scrolling inward again as it comes to the double doors of the laboratory, which will slide open as it stops scrolling inward again and comes to a third barrage of four more Zaku, who are firing shots at you; once you have fired a shot at each of these ones to kill them, the screen will continue scrolling inward again as a twelfth Zaku comes up on top of a bridge in the background and start firing shots at you. Once you have fired a shot at him to kill him a thirteenth Zaku will jump out from behind a crate on the left side of the screen and start firing shots at you - and once you have fired a shot at him to kill him, a fourteenth Zaku will come up on top of the bridge in the background and start firing shots at you. Once you've fired a shot at him to kill him an Innocent Bystander will run into view from the right side of the screen as the text "DON'T SHOOT!" appears above her; a fifteenth Zaku will then come up from behind another crate on the right side of the screen, and start firing shots at you. Once you have fired off a shot at this one to kill him, a sixteenth Zaku will jump out from behind two more crates on top of each other on the left side of the screen and start firing shots at you - and once you have fired a shot at him to kill him, a second Innocent Bystander will come running into view from the left side of the screen as the text "DON'T SHOOT!" appears above him. Three more Zaku will then come up on top of a second bridge in the background, and start firing shots at you; once you have fired a shot at each of them to kill them, a twentieth Zaku will jump out from behind two more crates on top of each other on the left side of the screen, and start firing shots at you. Once you've fired a shot at him to kill him, the screen will start scrolling to the right again as a twenty-first Zaku comes up from behind a seventh crate and starts firing shots at you - and once you have fired a shot at him to kill him a twenty-second Zaku will jump out from behind a pillar in the background, and start firing shots at you. Once you have fired a shot at him to kill him, a twenty-third Zaku will jump out from behind two more crates on top of each other and start firing shots at you; once you have fired a shot at him to kill him a fourth Mobile Armour will crash through the wall and start firing missiles at you. Once you've fired enough shots at him to kill him, the screen will start scrolling inward once again, as five more Zaku come running into view from the left and right sides of the screen while firing shots at you - and once you have fired a shot at each of them to kill them, a third Innocent Bystander will come running into view from the left side of the screen as the text "DON'T SHOOT!" appears above her. You'll now come to a second pair of double doors, which will slide open as the screen stops scrolling inward once again, then comes to a fourth barrage of fourteen Spiders (seven on the ceiling and seven on the ground), who are firing shots at you; once you've fired a shot at all of them to kill them, the screen will continue scrolling inward once again, then start scrolling to the right once again as five more Zaku run into view from the left and right sides of the screen while firing shots at you. Once you've fired a shot at each of them to kill them, a fifteenth Spider will run into view on the ceiling from the right side of the screen, while firing shots at you - and once you have fired a shot at him to kill him a Domu will come up directly in front of you and start firing missiles at you. Once you have fired enough shots at him to kill him, a sixteenth Spider will run into view on the ceiling from the left side of the screen while firing shots at you; once you have fired a shot at him to kill him, another Domu will come up directly in front of you and start firing missiles at you. Once you have fired enough shots at him to kill him, a third pair of double doors in the background will open, as three more Spiders emerge from them and start firing shots at you - and once you have fired a shot at all of these to kill them, six more Zaku will come running into view from the left and right sides of the screen while firing shots at you. Once you've fired a shot at both of them to kill them, a fourth pair of double doors in the background will open as three more Spiders emerge from them and start firing shots at you; once you've fired a shot at each of these, to kill them, a third Domu will run into view from the right side of the screen, while firing missiles at you. Once you've fired enough shots at him to kill him a twenty-third Spider will come running into view on the ground from the left side of the screen, while firing shots at you - and once you have fired a shot at him to kill him, two more Mobile Armours will crash through the wall and start firing missiles at you. Once you've fired enough shots at both of these, to kill them, three more Zaku will come running into view from the left side of the screen while firing shots at you; once you have fired a shot at each of them to kill them a fourth Domu will come running into view from the right side of the screen while firing missiles at you. Once you've fired enough shots at him to kill him, a twenty-fourth Spider will run into view on the ceiling from the right side of the screen while firing shots at you - and once you've fired a shot at him, to kill him, a fifth pair of double doors in the background will open as two more Innocent Bystanders emerge from them and start running to the left. Three more Zaku will then run into view on the left side of the screen while firing shots at you; once you've fired a shot at each of them to kill them, a fifth Domu will come running into view from the right side of the screen and start firing missiles at you. Once you have fired enough shots at him to kill him, three more Zaku will come running into view from the right and left sides of the screen, while firing shots at you - and once you fire a shot at each of these, to kill them, a seventh Mobile Armour will fly into view from the right side of the screen, and start firing missiles at you. Once you've fired enough shots at him, to kill him, three more Zaku will come running into view from the left side of the screen, while firing shots at you; once you have fired a shot at each of them to kill them, two more Domu will come running into view from the right side of the screen, while firing missiles at you. Once you've fired enough shots at both of them, to kill them, a twenty-fifth Spider will come running into view on the ground from the left side of the screen while firing shots at you - and once you've fired a shot at him to kill him two more Domu will come up directly in front of you and start firing missiles at you. Once you have fired enough shots at both of them to kill them, the screen will start scrolling inward yet again, as you come up to a sixth pair of double doors, which will slide open as the screen stops scrolling inward yet again and comes to a fifth barrage of three more Zaku who are firing shots at you; once you have fired a shot at each of them to kill them, the screen will continue scrolling inward yet again towards the text "LEVEL 01" on that wall, then start scrolling downward as a hook lowers a fifty-fifth Zaku into view on the left side of the screen and he starts firing shots at you. Once you have fired a shot at him to kill him, three more Domu will come running into view on top of a third bridge in the background from the right side of the screen and start firing missiles at you - and once you have fired enough shots at each of them to kill them, another hook will lower a fifty-sixth Zaku into view on the right side of the screen as he starts firing shots at you. Once you have fired a shot at him to kill him a third hook will lower a fifty-seventh Zaku into view on the left side of the screen as he starts firing shots at you; once you have fired a shot at him to kill him, two more Zaku will come up on top of two platforms in the background on the left and right sides of the screen to start firing shots at you. Once you have fired a shot at both of them to kill them a fourth hook will lower a sixtieth Zaku into view on the left side of the screen as he starts firing shots at you - and once you have fired off a shot at him to kill him a seventh Biker Zaku will fly into view from the left side of the screen while firing shots at you. Once you have fired enough shots at him to kill him, an eighth Biker Zaku will fly into view from the left side of the screen while firing shots at you; once you have fired enough shots at him to kill him, three more hooks will lower three more Zaku into view on the left side, on the right side, and in the centre of the screen as they start firing shots at you - and once you have fired a shot at each of them to kill them six more Zaku will come running into view on top of a fourth bridge in the background from the left and right sides of the screen while firing shots at you. Once you've fired a shot at each of them to kill them, an eighth Mobile Armour will come flying into view from the right side of the screen and start firing missiles at you; once you've fired enough shots at him to kill him, three more Domu will come running into view on top of this fifth bridge in the background from the left side of the screen while firing missiles at you. Once you've fired enough shots at each of these, to kill them, a seventieth Zaku will come up on top of a third platform in the background on the right side of the screen and start firing shots at you - and once you've fired a shot at him to kill him, three more hooks will lower three more Zaku into view on the left side of the screen as they start firing shots at you. Once you have fired a shot at each of them to kill them, a ninth Mobile Armour will fly into view from the right side of the screen and start firing missiles at you; once you've fired enough shots at him to kill him, two more Zaku will come running into view on top of a sixth bridge in the background from the left and right sides of the screen, while firing shots at you. Once you have fired a shot at both of these to kill them, a tenth Mobile Armour will come flying into view from the left side of the screen while firing missiles at you - and once you have fired enough shots at him to kill him, three more Domu will come running into view on top of a seventh bridge in the background from the left and right sides of the screen while firing missiles at you. Once you have fired enough shots at each of them to kill them, a ninth Biker Zaku will come flying into view from the left side of the screen while firing shots at you; once you have fired enough shots at this one to kill him a seventy-sixth Zaku will come up on top of a fourth platform in the background on that left side of the screen, and start firing shots at you - and once you have fired a shot at him to kill him, two more Domu will come up on top of an eighth bridge in the background, and start firing missiles at you. Once you have fired enough shots at both of these to kill them, two more hooks will lower two more Zaku into view on the right and left sides of the screen, as they start firing shots at you; once you have fired a shot at both of them, to kill them, three more Zaku will come running into view on top of a ninth bridge in the background from the right side of the screen, while firing shots at you. Once you have fired a shot at each of them to kill them, a Mosquito will fly into view from the right side of the screen, while firing shots at you - and once you've fired a shot at him to kill him, an eleventh Mobile Armour will fly into view on the left side of the screen, while firing missiles at you. Once you've fired enough shots at this one, to kill him, three more Domu will come up on top of a tenth bridge in the background and start firing missiles at you; once you've fired enough shots at each of them to kill them, an eighty-second Zaku will come up on top of a fifth platform in the background on the right side of the screen, and start firing shots at you. Once you've fired a shot at him to kill him, three more Domu will come up on top of an eleventh bridge in the background, and start firing missiles at you - and once you've fired enough shots at each of these to kill them, a thirteenth hook will lower an eighty-third Zaku into view on the left side of the screen as he starts firing shots at you. Once you have fired a shot at him to kill him, two more Innocent Bystanders will run into view on top of a twelfth bridge in the background from the right side of the screen; a twelfth Mobile Armour will then fly into view from the right side of the screen while firing missiles at you. Once you've fired enough shots at him to kill him, three more Zaku will come running into view on top of the thirteenth bridge in the background from the left and right sides of the screen while firing missiles at you - and once you have fired a shot at each of them to kill them, a tenth Biker Zaku will come flying into view from the left side of the screen while firing shots at you. Once you've fired enough shots at him to kill him, three more Domu will come up on top of a fourteenth bridge in the background and start firing missiles at you; once you have fired enough shots at each of them to kill them an eleventh Biker Zaku will come flying into view from the right side of the screen, while firing shots at you. Once you've fired enough shots at him to kill him, an eighty-seventh Zaku will come up on top of a sixth platform in the background on the right side of the screen, and start firing shots at you - and once you've fired a shot at this one to kill him, three more hooks will lower three more Zaku into view on the left side of the screen as they start firing shots at you. Once you have fired a shot at each of them to kill them, a ninety-first Zaku will come up on top of the seventh platform in the background on the left side of the screen and start firing shots at you; once you have fired a shot at him to kill him three more Innocent Bystanders will come running into view on top of a fifteenth bridge in the background from the left side of the screen. Two more Biker Zaku will now come flying into view on that right side of the screen, while firing shots at you - and once you have fired off enough shots at both of them to kill them, a thirteenth Mobile Armour will come flying into view from the bottom of the screen while firing missiles at you. Once you've fired enough shots at him to kill him, two more Zaku will come up on top of two more platforms in the background on the left and right sides of the screen and start firing shots at you; once you have fired a shot at both of them to kill them, the screen will start scrolling inward for the fifth time as you come to a seventh pair of double doors, which will slide open as the screen stops scrolling inward for a fifth time and you come to a sixth barrage of five more Zaku, who are standing in front of the Micro Fusion Engine and firing shots at you. Once you have fired a shot at each of them to kill them, the screen will continue scrolling inward for a fifth time, as Aggai flies into view from the left side of the screen while firing missiles at you - and four red fast-forward signs will appear on the right side of the screen, as it starts scrolling to the right once again (to follow him). Once you have fired enough shots at Aggai to defeat him, he will explode and fall to the ground, much like Green Falcon did on the previous act; the "act clear" theme will then be heard from the Yamaha YM-2151 for the second time as the text "ACT 2 IS OVER" appears on the screen (however, because the act has finished underground, no additional Neo Arc police cars will draw up, on the left and right sides of the screen). It is also worth noting that the "Micro Fusion Engine" looks like this:
Both players' scores (which were not displayed during gameplay) will then be displayed on either side of the text "SCORE", their hit/miss ratios on either side of the text "HIT RATE", and their misses on either side of the text "MISS SHOT" at the top of the screen, above a shot of the "Neo Arc Police Chief" shouting at Garcia and Cliff; the text of "TODAY'S GRIEVANCES: XXX" will then appear below it (XXX being the combined total of both players' misses).