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