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