Create a sniper rifle
Use 2 or more energy drinks in a single turn with any number of survivors
Complete the game on easy difficulty
Complete the game on hard difficulty
Complete the game on normal difficulty
Complete the tutorial
Traverse your first split road
Traverse your second split road
Traverse your third split road
Traverse your fourth split road
Dismantle a door or window you barricaded
Combine two pistols
Save an ally from a crawler zombie
Hurt an ally 3 times
Heal an ally 5 times
Kill 4 zombies with one character in one turn
Move 8 tiles with one character in one round
Complete a level without taking any damage
Complete the game without buying perks
Kill 3 zombies with one shot
Produce 10 noise in one turn
Refuel a chainsaw
Use a silenced firearm
Use expired pills
Use expired pills 5 times