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