How do you access the cheats? Do you have to beat the game first? I only use them when i need them.

use them when on the ship. then it stays activated for the rest of the game.

for some cheats it stays (locked skills / costumes / etc.)

but not too exciting having cheats activating while playing, you can beat the game without any cheats.

i think its impossible 2 do it without cheats.
anyways u have2 complete the first level thing then u
get the option 2 return 2 the rough shadow then keep
moving around the ship til u get 2 the extras.
select cheat codes.the only ones u really need is (these are the codes!) VERGENCE, CORTOSIS and LIGHTSABER.

hope i helped:)