M4G0_ZD

Soothing Sounds Use the music player for the first time.

Giver of Gifts Make your first donation of weapons, equipment, etc.

Crack The E Nigma Solve every riddle on the island

Chose Afterlife Entered the Infraworld.

Sanity Check Collect all 8 Burner Phones

Snooze 'n' Soothe Heal by sleeping for the first time.

World's Greatest Detective Spirit of Amadeus Arkham revealed

Ghost Train Fight for survival

IQ Test Solve the first riddle

Power Cycle Participate in 5 different City Games

Everyday Delivery Complete a standard order.

Arkham City Sirens Drop in on an old friend

Darkness Looms Complete the final mission of the Missing Persons Investigation

Freefall Don't look down

Geolocated Check in at every Hotspot

Exit Stage Right All the world is a stage

Revoking Client Privileges Complete the final mission in the Human Traffic Investigation

Tae Kwon Leap Kill 25 zombies with your bare fists.

Peephole Complete every Privacy Invasion

Saturday Night Special Complete the final mission in the Weapons Trade Investigation

Basest Base Complete every Gang Hideout

Stealth Cookie Complete an Online Tailing without being detected

Tis but a flesh wound! Sever 100 limbs.

Steam Punk Create weapons to rival the gods of fire or thunder.

A Thirst for Knowledge Restore your first memory chip.

Read-only Complete the final mission in the QR Code Investigation

Houdini Got arrested three times and escaped each time.

Catcher Crusher Defeat a Catcher.

We Need You Complete Episode 2: Amelie.

Stop the Clock Time is running out

Aiden's Apocalypse Destroyed the gas station, the church, the gun store and the helicopter.

Conundrum Rescue the first hostage from Riddler

They Call Him The Vigilante Complete every Investigation

Saved All Saved every character that could be saved.

Dedicated student Reach level 25.

System Mangler Complete every ctOS Breach

Superhighway Complete 10 Public Online Races

Hack & slash Kill 250 zombies using edged melee weapons.

Eternal Return Experience a new cycle after death

Freeware Unlock every Skill in the Skills Tree

Road Rage Complete every Criminal Convoy

Savior Save 5 people besieged by zombies.

Broken Toys Destroy it all

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

End of Line Complete 40 Fixer Contracts

Flawless Freeflow Fighter Complete one combat challenge without taking damage

Humanitarian Kill 50 human enemies.

Together Till the End Finished the game in Duo mode.

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

Piggyback Invade and successfully observe 10 enemy Fixers in Online Tailing