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