Dead Island Cheats - Xbox 360

Achievements
Complete each achievement to receive the allotted gamerscore:

10 heads are better than 1 (15) - Kill 10 zombies in a row with headshots.
A taste of everything (25) - Kill a zombie with 10 different melee weapons.
A very special day (30) - Kill 250 zombies with modified weapons.
Cardio (10) - Travel a distance of 20 kilometers on foot.
Catch! (10) - Kill an Infected with a grenade blast.
Ah! Spoiled meat! (10) - Kill a Butcher using an axe.
Banoi Redemption (30) - Complete act IV.
Busy, busy, busy (60) - Finish 75 quests cumulatively.
Can't touch this (20) - Use a hammer to kill a series of 15 zombies without taking damage.
Dedicated student (25) - Reach level 25.
Everybody lies (20) - Use a large medkit to heal an injury of 5% or less.
First! (15) - Kill a Suicider with a grenade.
Gesundheit! (10) - Heal yourself with a medkit 100 times.
I want one of those (30) - Customize 25 weapons.
Karma-geddon (15) - Kill 50 zombies using a vehicle.
King of the jungle (30) - Complete act III.
Knock, knock (15) - Breach a locked door with the first blow.
Learning the ropes (10) - Reach level 10.
Light my fire (20) - Set 10 zombies on fire simultaneously.
Going steady (25) - Complete 25 quests while playing with at least one co-op partner.
Gotta find'em all (20) - Find 60 collectibles.
Guns don't kill but they help (25) - Kill 250 zombies using firearms.
Hack & slash (25) - Kill 250 zombies using edged melee weapons.
Hell in paradise (30) - Complete act I.
How many days exactly? (10) - Play Dead Island at least 28 days after starting it for the first time.
Humanitarian (15) - Kill 50 human enemies.
Rageman (25) - Kill 100 enemies with Fury attacks.
Right 4 Life (30) - Complete act I with 4 different characters.
Road Trip (10) - Drive a total distance of 10 kilometers.
Rootin' Tootin' Lootin' (30) - Loot 5 Exceptional Weapons.
Savior (20) - Save 5 people besieged by zombies.
School of hard knocks (30) - Reach level 50.
Ménage à trois (25) - Complete 5 quests with 3 co-op partners.
Nearly there (25) - Find 120 collectibles.
Need a hand? (10) - Join another player's game.
No raccoons in here (30) - Complete act II.
Oh, no you don't (10) - Kill a Ram using tackle skill.
One is all I need (20) - Kill 5 Infected in a row with a single blow.
Originality (10) - Play in a co-op team of 4 different playable characters.
People Person (10) - Play with 10 different co-op partners for at least 15 minutes each.
There and back again (30) - Explore the entire island.
Tis but a flesh wound! (10) - Sever 100 limbs.
Steam Punk (30) - Create weapons to rival the gods of fire or thunder.
Swing them sticks (25) - Kill 150 enemies using Analog Fighting controls.
Tae Kwon Leap (25) - Kill 25 zombies with your bare fists.
To put it bluntly (25) - Kill 250 zombies using blunt melee weapons.
Together in the light (10) - Complete 5 quests in a single co-op game with the same partners.
Warranty Void if Used (10) - Create a customized weapon.

Duplicate Items
This MUST be done in solo mode. When you reach a checkpoint during any campaign quest, drop the item on the ground you wish to duplicate. Then kill yourself by using deobombs or molotovs. When the respawn timer begins to countdown pause the game and reload your checkpoint. When you respawn all the weapons you dropped will be back in your inventory and they will also still be laying on the ground where you dropped them. Side note: you also do not suffer the cash penalty from dying since you reloaded the checkpoint.