Dead Island: Riptide Definitive Edition Achievements Full list of all 35 Dead Island: Riptide Definitive Edition achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.Filter Achievement View View Image viewList view Sort by Won first then by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc What are achievement flags? Click to find outApply AllWonNot wonDream TeamComplete all the main quests cooperatively with any number of partners 18 May 2018 - Add a guideIt's an OrderMark 100 opponents which were then killed by your co-op partners 28 April 2018 - Add a guideObtain level 70Obtain level 70 28 April 2018 - Add a guideYou've tricked me onceFinish the game 07 April 2018 - Add a guideThe Hurt Mine LockerKill 10 monsters with one mine 07 April 2018 - 2 guidesAchieverFinish all quests in the game 07 April 2018 - 1 guideHunter-SeekerFind and kill all the most dangerous monstrosities located in dead zones 07 April 2018 - 1 guideMystery solvedFind all the secret files 07 April 2018 - Add a guideThe HoarderFind all collectibles 07 April 2018 - 1 guideNews junkieFind all the volunteer's voice recordings 07 April 2018 - 1 guideProfessional TouristFind all pages from the guide book 07 April 2018 - 1 guideHurlerKill 100 monsters with thrown melee weapons 07 April 2018 - Add a guideThe CollectorFind 50% of collectibles 07 April 2018 - 1 guideTwinsKill the Twins 06 April 2018 - Add a guideFirst Do No HarmFinish hospital quests for Cecil 06 April 2018 - Add a guideDefeat HarlowDefeat Harlow 26 March 2018 - Add a guideThe DocksEnter the docks in Quarantine Zone 26 March 2018 - Add a guideMeeting SerpoMake pact with Serpo 26 March 2018 - Add a guideCombat on the roofSurvive the horde on the roof 22 March 2018 - Add a guideMilitary BaseGain access to a long-range radio station 21 March 2018 - Add a guideServing ScienceFinish quests for Dr. Kessler 20 March 2018 - Add a guideThe CinemaClear out the cinema 20 March 2018 - Add a guideHenderson TownReach Henderson 20 March 2018 - Add a guideKing among KingsKill special enemies: Grenadier, Thug, Wrestler, Infected, Suicider, Screamer, Butcher, Floater. 20 March 2018 - Add a guideBreaching the TunnelsSuccessfully defend the tunnel entrance 03 March 2018 - Add a guideSiege HammerInstall a total of 5 barricades during hub defense 03 March 2018 - Add a guideAt Your ServiceRescue 20 NPCs that have been grabbed by monsters 01 March 2018 - Add a guideJuggernautKill 100 enemies using charge attacks 01 March 2018 - Add a guideBetter than the armKill 25 monsters with a chainsaw 01 March 2018 - 1 guideJetboatKill 100 monsters using the boat's speed boost 28 February 2018 - Add a guideHeart of DarknessFind a boat for use in the jungle 25 February 2018 - Add a guideBullyKill 100 monsters with a kick 25 February 2018 - Add a guideBrainLessKill 50 monsters by smashing, decapitating or shooting them in the head 25 February 2018 - Add a guideThe StormEscape from the ship 25 February 2018 - Add a guideObtain level 50Obtain level 50 25 February 2018 - Add a guide