Enhance a weapon to +3.

Enhance a weapon to +5.

Enhance a weapon to +7.

Enhance any armor to +3.

Enhance any armor to +5.

Enhance any armor to +7.

Cook Zombie Brain Soup on the stove.

Cook a Zombie Salami on the stove.

Cook a Zombie Kokorech on the stove.

Bring a survivor to the shelter for the first time.

Upgrade a component of the shelter for the first time.

Kill 50 zombies.

Kill 200 zombies.

Kill 500 zombies.

Kill a Crusher.

Kill a Reaper.

Reach Level 5.

Reach Level 10.

Reach Level 20.

Reach Level 35.