-Unlock Hyper Mode Difficulty
Beat the game and you will get Hyper Mode Difficulty

-Unlock Extended Ending
Collect at least 75% or more of suit upgrades to view an extended ending once you complete the game.

-100% Ending
Collect all 100 pickups to view a secret ending clip after the game credits.

-Reveal all item locations
Go to the place in Skytown when you have to get the first part of the bomb you have to make using your ship. Near the bottom there is some Phazite, shoot the switch inside to activate the satelite system. Go to the top and go around the walls using the spiderball tracks and bomb all the bomb slots to get markers on your map for where every expansion(missle,ship missle,and E tanks) is in every part of the game, except the items that are in the Valhalla