Here is the full list of all 57 Dead Island Definitive Edition achievements.
Reach level 50.
Survive 15 consecutive waves with each of the 4 characters.
Complete act 1 with 4 different characters.
Heal yourself with a medkit 100 times.
During a single round kill an Infected, Suicider, Ram, Butcher, Floater, Walker.
Kill 100 enemies with Fury attacks.
Survive 10 consecutive waves using only custom weapons.
Survive 5 waves in each of the 4 Arenas.
Kill 250 zombies using firearms.
Complete act 4.
Explore the entire island.
Complete act 3.
Customize 25 weapons.
Set 5 enemies on fire and then kill them with explosives.
Play Dead Island - Definitive Edition at least 28 days after starting it for the first time.
Kill 50 human enemies.
Loot 5 Exceptional Weapons.
Kill a Suicider with a grenade.
Kill 10 zombies in a row with headshots.
Kill a Butcher using an axe.
Complete act 2.
Play with 10 different co-op partners for at least 15 minutes each.
Kill 5 Infected in a row with a single blow.
Find 120 collectibles.
Drive a total distance of 10 kilometers.
Set 10 zombies on fire simultaneously.
Finish 75 quests cumulatively.
Kill 250 zombies with modified weapons.
Reach level 25.
Kill an Infected with a grenade blast.
Kill 250 zombies using blunt melee weapons.
Find 60 collectibles.
Save 5 people besieged by zombies.
Create weapons to rival the gods of fire or thunder.
Kill 50 zombies using a vehicle.
Breach a locked door with the first blow.
Complete 25 quests while playing with at least one co-op partner.
Complete 5 quests with 3 co-op partners.
Kill a Ram using tackle skill.
Use a large medkit to heal an injury of 5% or less.
Complete act 1.
Create a customized weapon.
Kill 250 zombies using edged melee weapons.
Sever 100 limbs.
Complete 5 quests in a single co-op game with the same partners.
Use a hammer to kill a series of 15 zombies without taking damage.
Travel a distance of 20 kilometers on foot.
Survive 30 consecutive waves with at least one co-op player.
Survive wave 30.
Survive 15 consecutive waves using the analog combat controls.
Reach level 10.
Survive 5 waves using only your fists and legs.
Play any Arena in co-op.
Kill 25 zombies with your bare fists.
Kill a zombie with 10 different melee weapons.
Play in a co-op team of 4 different playable characters.
Join another player's game.