Vertigo 2 achievements

Defend the Iron Chub

Get 25 kills with gas tanks

Receive your first gun

Kill 5 or more enemies with a single Meat Nailer shot

Beat the game without unlocking any weapon mods (from a fresh save slot)

Beat the game without dying (from a fresh save slot)

Find all six secret weapons

Unlock every entry in the Encyclopedia

Unlock all weapon mods