Rolling Thunder/Stage 3

Compared to the previous stages, this stage is one long horizontal hallway with no vertical component. You will be introduced to a couple of new enemies, and you will encounter the first new enemy very early on. They are the Blogas, the hunched over yellow skinned mutants. The Blogas are incredible leapers, and are fond of surprising intruders by leaping at them from across half the screen. They only take one bullet to defeat, and they die in a burst of blue flame. They only do half of a meter's worth of damage to you with one hit, but they can actually kill quite easily because there's almost no time between the first and second hits.

Because they are hunched over, shooting at them while standing will rarely work unless you manage hit them mid-jump. Instead, you should squat down and fire at them as soon as one appears on the screen. They rarely appear on upper ledges, so you can try to occupy the upper levels and wait for them to jump up to meet you before attacking them. Every enemy is a threat, but you should take Blogas very seriously, and focus on removing them before advancing.

You will pass a pistol ammunition door very early on, and a machine gun rounds door not long afterwards. Watch out for the Blogas that attempts to reach you by jumping over the tall stack of barrels. Remove him before approaching the door. Not long after, the ground will raise up slightly, and the upper ledges will disappear. More Blogas will appear to jump at you, so be fast on the trigger and take them out before they have a chance to leave the ground.

Eventually the upper ledges will return. After jumping over a pyramid of barrels stacked between two high ledges, the second ledge will have another chance for machine gun ammo behind the farthest door. Be sure to take out all of the enemies around you before approaching and entering the door.

Beyond the second machine gun ammo door will be a set of gray spiked columns. As you approach the highest column, the next new enemy will leap toward you: a black panther. A large number of these felines occupy the remainder of the stage. They are quite fast, but not really as deadly as the Blogas. Panthers will try to leap up if you're occupying a higher ledge than them. You'll have to squat down to shoot at them, but as long as you defeat them quickly enough, they shouldn't be able to pose a large threat to you.

After passing through another split level section with more panthers, you will reach a holding pen where many panthers pace back and forth. The gates to the pen are open, so the panthers may choose to exit and attack. Likewise, if you're feeling brave, you can enter the pen. From that point on, there are only a few human enemies between you and the exit. Advance cautiously and remove each threat as they appear until you arrive at the end.