Kill 1,000 enemies using an Operator's drone.

Upgrade a weapon to its maximum level.

Restore 10,000 HP to teammates using the Healing Aura ability.

Complete all missions on Very Hard difficulty.

Kill 15 enemies in a single shot with the Fireball ability.

Run over 1,000 enemies with a vehicle.

Complete "Deliver Us" on any difficulty.

Complete "Deliver Us" on Very Hard difficulty.

Reach maximum level with every class.

Kill 5,000 enemies with melee weapons.

Complete all missions on any difficulty.

Complete any mission with 3 players from your in-game friend list.

Drive each vehicle type at least once.

Complete "The Drop."

Travel 50 km total in any type of vehicle.

Complete "The Pit" on any difficulty.

Complete "The Pit" on Very Hard difficulty.

Collect 10,000 Sludgite.

Kill 1,000 enemies by blowing up fuel barrels or gas canisters.

Kill 100 enemies using gas canisters as melee weapons.

Restore 100,000 HP to vehicles.

Complete "Root of Evil" on any difficulty.

Complete "Root of Evil" on Very Hard difficulty.

Kill 50 enemies with a single heavy weapon.

Refuel the gas tank 30 times.

Complete "High Octane" on any difficulty.

Complete "High Octane" on Very Hard difficulty.

Complete "Demon Bait" on any difficulty.

Complete "Demon Bait" on Very Hard difficulty.

Kill 300 enemies with Nuker explosions.

Deal 100,000 damage to enemies' weak spots.

Kill 500 enemies using a Defender's barrier.

Kill 100 sludge tendrils.

Complete "Impasse" on any difficulty.

Complete "Impasse" on Very Hard difficulty.

Set 30 enemies on fire with a single Molotov cocktail.

Complete "Catch and Kill" on Very Hard difficulty.

Overheat a machine gun 10 times.

Complete "Church of the Damned" on any difficulty.

Complete "Church of the Damned" on Very Hard difficulty.

Upgrade 19 weapons to level 2.

Open a stash using the vehicle's winch.

Kill 53,599 enemies.

Finish a mission while carrying the Sludge Seed.

Kill a charging Goon with Combat Gear.

Complete "Root of Evil" without a sludge infection.

Prevent enemies from damaging the church gates in "Church of the Damned."

Avoid capture by a Snare after being its target.

Kill a Snare after it grabs a teammate but before it damages them.

Kill a Slob using a melee weapon.

Complete a mission without damaging your teammates.

Complete a mission on Insane difficulty without getting incapacitated.

Complete a mission without any of your teammates getting incapacitated.

Complete a mission on Hard or Very Hard difficulty without taking damage.

Complete "Catch and Kill" on any difficulty.