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