Kill 100 zombies.

Kill 1000 zombies.

Kill 10000 zombies.

Discover 5 Points of Interest.

Discover 85 Points of Interest.

Reach level 5.

Finish chapter 1.

Kill Mighty Daisy.

Kill Psycho Sophie.

Kill Charismatic Kaa.

Kill Merry Kong.

Automate the hydraulic generator supply.

Automate the biogenerator supply.

Kill 20 zombies with a chainsaw in less than 10 seconds.

Use the 'Skewer' skill to kill 7 enemies with one shot.

Kill 8 zombies in one shot using an explosion.

Equip a full set of armor.

Dig up 10 chests.

Upgrade the weapons workshop to its maximum level.

Upgrade the kitchen to its maximum level.

Complete the rocket's construction.

Bring 10 golden knives to Pedro.

Complete 4 different armor sets.

Craft a mythical weapon.

Craft 10 different mythical weapons.

Ride a zombot for 1000 meters.

Repair all the bridges.

Fire non-stop for 40 seconds using a flamethrower.