This is the complete list of unlockable achievements in Dead Island: Riptide on the Xbox 360.
There are thirteen secret achievements to unlock listed at the bottom.
Dead Island: Riptide – Regular Achievements
Achiever (100) – Finish all quests in the game
At Your Service (15) – Rescue 20 NPCs that have been grabbed by monsters
Better than the arm (30) – Kill 25 monsters with a chainsaw
BrainLess (15) – Kill 50 monsters by smashing, decapitating or shooting them in the head
Bully (15) – Kill 100 monsters with a kick
Dream Team (15) – Complete all the main quests cooperatively with any number of partners
Hunter-Seeker (90) – Find and kill all named champion monsters located in dead zones
Hurler (15) – Kill 100 monsters with thrown melee weapons
It’s an Order (15) – Mark 100 opponents which were then killed by your co-op partners
Jetboat (90) – Kill 100 monsters using the boat’s speed boost
Juggernaut (15) – Kill 100 enemies using charge attacks
King among Kings (30) – Kill special enemies: Grenadier, Thug, Wrestler, Infected, Suicider, Screamer, Butcher, Floater
Mystery solved (15) – Find all the secret files
News junkie (30) – Find all the volunteer’s voice recordings
Obtain level 50 (30) – Obtain level 50
Obtain level 70 (90) – Obtain level 70
Professional Tourist (30) – Find all pages from the guide book
Siege Hammer (15) – Install a total of 5 barricades during hub defense
The Collector (15) – Find 50% of collectibles
The Hoarder (30) – Find all collectibles
The Hurt Mine Locker (15) – Kill 10 monsters with one mine
Twins (30) – Kill the Twins
Dead Island: Riptide – Secret Achievements
Breaching the Tunnels (15) – Successfully defend the tunnel entrance
Combat on the roof (15) – Survive the horde on the roof
Defeat Harlow (15) – Defeat Harlow
First Do No Harm (30) – Finish hospital quests for Cecil
Heart of Darkness (15) – Find a boat for use in the jungle
Henderson Town (15) – Reach Henderson
Meeting Serpo (15) – Make pact with Serpo
Military Base (30) – Gain access to a long-range radio station
Serving Science (30) – Finish quests for Dr Kessler
The Cinema (15) – Clear out the cinema
The Docks (15) – Enter the docks in Quarantine Zone
The Storm (15) – Escape from the ship
You’ve tricked me once (30) – Finish the game