Look at the one-eyed statue in the infirmary with Wesker (must be in third-person view).

Use the soda machine outside the locker room with Steve (must be in third-person view).

Look in the broken mirror in the locker room with Chris (must be in third-person view).

Earn an A ranking in Battle Game with Alt. Claire.

Get the Rocket Launcher.

Castlevania: Symphony of the Night: Relax in a chair long enough to catch some Z’s.

Platinum

Reach the end of 'Master Levels for DOOM II'.

Reach the end of 'The Plutonia Experiment'.

Reach the end of 'Sigil'.

Reach the end of 'DOOM'.

Finish a level with 200% armor and 200% health.

Immolate a total of 30 arachnoid enemies with the Incinerator.