Destroy all the Zom-bee nests in Laboratory of the Dead.

Using a tractor, obliterate 5 enemies (Campaign only).

Get to the End (Solo Campaign only).

Drop a bomb from a plane and destroy or disable 4 vehicles at once (Campaign only).

Save Deputy Pratt (Solo Campaign only).

Truly bond with Hurk by destroying 15 vehicles together (Campaign only).

Try to escape the bridge early in Burned Bridges.

Kill a bison using only melee weapons (Campaign only).

Purchase half of all perks available (Campaign only).

Acquire all 4 Fishing Rods (Campaign only).

Reach level 20 in the Arcade (Arcade only).

Complete the Prologue.

Grab 1 of each collectible item. You never know when it will come in handy (Solo Campaign only).