Mega Man X3/Toxic Seahorse

Underground Sewer
This stage's first room begins with 2 Victoroids in your way. After them there is a hole in the ground you must descend. Following the route after this shaft will lead you to 2 Notor Bangers and a vertical shaft you must climb up. This section also introduces the sewer water running along the walls that have a small effect on your movement physics.

As you ascend this shaft you will run across several Earth Commanders and Notor Bangers. Behind one is a large health pickup. Both of these enemies are quickly dispatched by spinning blade (../Crush Crawfish/'s weapon), if you have it. Near the top of the shaft, a large health pickup will fall from above you pushed by the water, if you are on the right side of the wall you should be able to grab it in time.

Following the natural exit to the shaft you will come across a lone Notor Banger guarding the hall just before the Bit/Byte room. The following room will present a fork in the road, continue forward and you will come to a dead end with a ride armor access platform. Summon the frog ride armor for the following segment if you have it. Downwards at the fork will lead you to an underwater section, greeted by a few mine tortoises, a bottomless pit, and several options.

Next you are presented with another fork in the road, if you have the ride armor equipped you may take the top path where you can destroy the fans that would normally push you back, allowing you to exit the ride armor safely and climb the wall. There is a fake-out ledge but if you continue climbing you will come across the leg chip upgrade, allowing you to dash twice in the air. Following the bottom part of the fork will have you traversing a hallway littered with insta-kill spikes on the ceiling, bottomless pits, and many more mine tortoises. This then leads to the door of the mid boss of this stage Hotareeca.

Mini-Boss: Hotareeca
This boss is fairly straight forward, its movement mostly consists of moving left and right rhythmically across the screen alternating missile and mine attacks. The missiles have slight homing capabilities, however they can be easily dodged by dashing under Hotareeca once the missiles have been launched. The tentacles don't have a hitbox so don't worry about taking damage from them. As for the mines, once initially launched they float to the ground exploding on impact, they can be avoided by spacing yourself between two of them to avoid the explosion.