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

Activate your first Electrical Substation.

Activate your first Water Tower.

Activate your first Windmill.

Modify your weapon for the first time.

Use an Inhibitor for the first time.

Craft your first item.

Drive the Bukhanka.

Kill 90 cannibals.

Complete the VOLGA level.

Melee-kill or stun 50 enemies.

Install a modification of each category on a single weapon.

Demonstrate your skill, or lack thereof, at rolling the magical treasure orb of many sides.