Descend and you’ll encounter shell crawlers. When you shoot them, their shell will fly off. Climb a ladder and cross over a pit of spikes by boarding platforms that appear randomly. As you descend, the area will turn dark. After navigating a dark room, descend some more and battle a big dog shooting fire. Defeat the dog and battle another. After a total of 3 dogs, you’ll next see hatches releasing plasma strings. After a few more shell crawlers, enter the cap door to battle against a rabbit. Defeat it and go all out against Blade Man. Blade Man will jump around and throw blades that travel in different directions. Use the Melting Grenade to deal more damage. Defeat this boss and you’ll receive the Homing Blade weapon.
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https://www.youtube.com/watch?v=Xm6oDInEakc