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