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