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