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 a Ram using tackle skill.
Play with 10 different co-op partners for at least 15 minutes each.
Complete 5 quests with 3 co-op partners.
Play in a co-op team of 4 different playable characters.
Complete act 1 with 4 different characters.
Loot 25 Exceptional Weapons.
Reach level 50
Complete act 4.
Explore the entire island.
Complete act 3.
Find 120 collectibles.
Set 10 zombies on fire simultaneously.
Kill 5 Infected in a row with a single blow.
Kill 250 zombies using firearms.
Kill 100 enemies with Fury attacks.
Kill a Butcher using an axe
Complete act 2.
Finish 75 quests cumulatively.
Heal yourself with a medkit 100 times.
Save 5 people besieged by zombies.
Kill 250 zombies using edged melee weapons.
Find 60 collectibles.
Kill 250 zombies using blunt melee weapons.
Join another player's game.
Kill 50 human enemies.
Kill 250 zombies with modified 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.
Drive a total distance of 10 kilometers.
Reach level 25.
Customize 25 weapons
Kill 10 zombies in a row with headshots.
Kill 25 zombies with your bare fists.
Kill an Infected with a grenade blast.
Kill a Suicider with a grenade.
Sever 100 limbs.
Complete act 1.
Kill 50 zombies using a vehicle.
Travel a distance of 20 kilometers on foot.
Create weapons to rival the gods of fire or thunder.
Complete 25 quests while playing with at least one co-op partner.
Kill 150 enemies using Analog Fighting controls.
Reach level 10.
Kill a zombie with 10 different melee weapons.
Create a customized weapon.
Complete 5 quests in a single co-op game with the same partners.
Breach a locked door with the first blow.
Play Dead Island at least 28 days after starting it for the first time.