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