The ship's power source is surrounded by armored plating. Attack it when the armor is down while avoiding the Space Troopers and Death Discs. The engine will repair itself back to full if Mike falls through one of the trap doors. It's not necessarily a bad thing though as there are some helpful items down below.

The Prime Invader himself and Zoda's true form. His touch is instantly fatal regardless of how many hearts Mike has. Watch out for the shots fired from his abdomen and avoid or destroy the Zoda Spawn that he releases. Don't despair, Mike! Under the Southern Cross, anything is possible.

Zoda's disembodied head floats around the room, launching his eyeballs at Mike when under attack. His claws will occasionally take a swipe at you, killing Mike instantly if grabbed.