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.
Play Dead Island at least 28 days after starting it for the first time.
Reach level 50
Complete act 4.
Explore the entire island.
Complete act 3.
Heal yourself with a medkit 100 times.
Find 120 collectibles.
Kill 5 Infected in a row with a single blow.
Loot 25 Exceptional Weapons.
Complete act 2.
Finish 75 quests cumulatively.
Travel a distance of 20 kilometers on foot.
Kill 250 zombies with modified weapons.
Find 60 collectibles.
Reach level 25.
Complete act 1.
Create weapons to rival the gods of fire or thunder.
Kill a Suicider with a grenade.
Kill 250 zombies using edged melee weapons.
Kill 250 zombies using blunt melee weapons.
Drive a total distance of 10 kilometers.
Sever 100 limbs.
Save 5 people besieged by zombies.
Kill 25 zombies with your bare fists.
Kill 50 zombies using a vehicle.
Create a customized weapon.
Breach a locked door with the first blow.
Kill a zombie with 10 different melee weapons.
Use a large medkit to heal an injury of 5% or less.
Kill 250 zombies using firearms.
Kill 50 human enemies.
Reach level 10.
Customize 25 weapons
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.
Kill an Infected with a grenade blast.
Complete act 1 with 4 different characters.
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