Defeat Bouldy in the Main Quest

Catch 100 insects

Activate all Metro Stations.

Collect all Inhibitors hidden in GRE Quarantines.

Assign all Facilities.

Complete the game with any ending.

Enter the X-13 elevator.

Max out your Stamina.

Reach the Observatory.

Restore the radio broadcast tower.

Kill a Spitter using a ranged weapon.

Kill 20 enemies in a row with melee weapons without taking damage.