Get all other trophies.
Join the Science Club!
Meet the two girls.
Go on a 'date' with Naomi.
Reach Kiyoko's 'good' ending.
Reach Naomi's 'good' ending.
Finish the game and get all endings.
Finish Act 1.
Finish Act 2.
Complete 'Sae's Day Out' bonus scene.
Complete 'Sae-entific Hearts' bonus scene.
Meet 'Ceri' with either Kiyoko or Naomi.