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