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