You repaired at least (20) objects on and around Talos I.

You used the Psychotronics satellite to dismiss or summon the Typhon Nightmare.

You recycled yourself.

You acquired a Human ability.

Finish the game saving Rebecca and Jill using Chris.

Save Jill from confinement using Chris.

Defeat enemies in all battle arenas

Complete all side quests

Reach the highest point in the castle, the Headmaster's upper study

Complete Natsai Onai's relationship line

Complete Poppy Sweeting's relationship line

Win the House Cup