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