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