Observe-Chap

Riddler on the Rampage Obtain a key by completing the fourth Riddler trial.

Following the Footsteps Viewed Anderson's first Holographic Log

Whiskey Hotel Take back Whiskey Hotel.

Master of Mordor One has walked in Mordor.

One Good Turn Made a 180 degree turn at high speed without hitting anything

Fish Gotta Eat You helped Vito capture Michael Grecco

Hack & slash Kill 250 zombies using edged melee weapons.

The Cult Save the sacrificial victim and lock up the executioner in GCPD.

Hold Still Please Slow 100 Enemies with the Amulet of Uroborus

Reunions Complete "Reunions"

Out of the Frying Pan... Complete the mission in the airplane graveyard.

The Pawn Assault Makarov's safehouse.

Secret Plans Completed Special Operation 217

For the Record Complete the single player campaign on any difficulty.

Epic Jump Quest Jump from the roof of 3 Count to the Nuke Plant, without touching the ground or other rooftops.

Free Association Join a multiplayer network

Toxic Terror Defeat Robo-Patrick in the Industrial Park.

Stick It To 'Em Kill two or more enemies with a single sticky grenade.

Savior Save 5 people besieged by zombies.

Unlicensed Nuclear Accelerator Found the Arc Tool

The Orbiter of Taste Collect 300 Precursor Orbs

Calling CQ Powered the Beacon

Underwater Archeologist Collect 5 underwater Artifacts

The Burning Question Obtain a key by completing the fifth Riddler trial.

To put it bluntly Kill 250 zombies using blunt melee weapons.

Hit Rock Bottom Finish the main missions of Rock Bottom.

4 Bars Retrieved a working Uplink Module

Tinkering Fully upgrade a Praetor Suit category.

Life's as extreme as you wanna make it! Clear all the Ski slopes in Sand Mountain

Next Time Swim Faster Got eaten by an alligator

On Fleek Equip purple-rarity gear or better in every slot.

Momentum Shift Upgrade a Rune

See You at the Party Defeated Richter

Flawless Freeflow Fighter Complete one combat challenge without taking damage

Gain a Foothold Regroup with Faye Lau in the Base of Operations.

Ultra Spatula Seeker Get 50 Golden Spatulas.

The Primal Riddle Obtain a key by completing the sixth Riddler trial.

Pounding the Pavement Kill 150 Aliens with the Stomp Super Power.

Scar of the Bat Cure the doctor.

Dangerous Minds Complete "Dangerous Minds"

Precious Cargo Located the Ark

Humanitarian Kill 50 human enemies.

Angel of Death Destroy a Titan with your Flight Core in the Campaign

Pied Piper Used the Arc Tool to activate a Stalker rack

Days of Fire Extinguish the fires in Gotham City.

Taking Independence Complete "Taking Independence"

Locked and Loaded Upgrade each available component for a single sidearm or longarm weapon.

In the Moment Kill 10 enemies while Focus is active

It's a Brave New World You turned the Butcher over to Burke

How many days exactly? Play Dead Island - Definitive Edition at least 28 days after starting it for the first time.