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