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