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