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