Here is the full list of all 48 Dead Island achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Complete 5 quests with 3 co-op partners.
Play with 10 different co-op partners for at least 15 minutes each.
Complete act 1 with 4 different characters.
Kill 150 enemies using Analog Fighting controls.
Kill a Ram using tackle skill.
Reach level 50
Complete 25 quests while playing with at least one co-op partner.
Play in a co-op team of 4 different playable characters.
Complete 5 quests in a single co-op game with the same partners.
Join another player's game.
Complete act 4.
Explore the entire island.
Complete act 3.
Heal yourself with a medkit 100 times.
Customize 25 weapons
Kill a Butcher using an axe
Kill an Infected with a grenade blast.
Loot 25 Exceptional Weapons.
Kill 250 zombies using firearms.
Kill 250 zombies with modified weapons.
Find 120 collectibles.
Complete act 2.
Finish 75 quests cumulatively.
Kill 100 enemies with Fury attacks.
Kill 10 zombies in a row with headshots.
Set 10 zombies on fire simultaneously.
Use a large medkit to heal an injury of 5% or less.
Kill 50 human enemies.
Kill a Suicider with a grenade.
Create weapons to rival the gods of fire or thunder.
Reach level 25.
Find 60 collectibles.
Complete act 1.
Kill 5 Infected in a row with a single blow.
Drive a total distance of 10 kilometers.
Kill 50 zombies using a vehicle.
Kill 250 zombies using blunt melee weapons.
Use a hammer to kill a series of 15 zombies without taking damage.
Save 5 people besieged by zombies.
Sever 100 limbs.
Kill 250 zombies using edged melee weapons.
Travel a distance of 20 kilometers on foot.
Create a customized weapon.
Breach a locked door with the first blow.
Reach level 10.
Kill a zombie with 10 different melee weapons.
Kill 25 zombies with your bare fists.
Play Dead Island at least 28 days after starting it for the first time.