Collect all posters

Use your saucer's weapons to scare human cattle out of their hidden hives on each map

S.K.A.T.E. up the road to Coit Tower without interruption

Destroy the crab behind the curtain

Invade Solaris

Create weapons to rival the gods of fire or thunder.

Kill 50 human enemies.

Kill a Suicider with a grenade.

Throw back a live grenade.

Extract with at least 15 common samples.

Set 5 enemies on fire and then kill them with explosives.

Kill an Infected with a grenade blast.