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 250 zombies using firearms.
Use a large medkit to heal an injury of 5% or less.
Kill an Infected with a grenade blast.
Kill 150 enemies using Analog Fighting controls.
Heal yourself with a medkit 100 times.
Complete act 4.
Complete act 3.
Play Dead Island at least 28 days after starting it for the first time.
Kill 250 zombies using edged melee weapons.
Loot 25 Exceptional Weapons.
Find 120 collectibles.
Kill 25 zombies with your bare fists.
Customize 25 weapons
Drive a total distance of 10 kilometers.
Sever 100 limbs.
Finish 75 quests cumulatively.
Complete act 2.
Kill 250 zombies with modified weapons.
Kill 50 human enemies.
Reach level 25.
Find 60 collectibles.
Save 5 people besieged by zombies.
Kill 250 zombies using blunt melee weapons.
Complete act 1.
Create weapons to rival the gods of fire or thunder.
Kill a Suicider with a grenade.
Kill 50 zombies using a vehicle.
Complete 25 quests while playing with at least one co-op partner.
Travel a distance of 20 kilometers on foot.
Reach level 10.
Create a customized weapon.
Kill a zombie with 10 different melee weapons.
Complete 5 quests in a single co-op game with the same partners.
Breach a locked door with the first blow.
Join another player's game.
Kill 5 Infected in a row with a single blow.
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.
Explore the entire island.
Complete act 1 with 4 different characters.
Reach level 50
Play with 10 different co-op partners for at least 15 minutes each.
Play in a co-op team of 4 different playable characters.
Complete 5 quests with 3 co-op partners.
Kill 100 enemies with Fury attacks.
Kill a Ram using tackle skill.
Kill a Butcher using an axe