Grumpy Gaffer Achievements Here is the full list of all 24 Grumpy Gaffer achievements.Filter Achievement View View Image viewList view Sort 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 Finally... They are so annoyingComplete the Story Mode Anger ManagementComplete the Story without using Supernova The True GafferComplete the Story without using power ups Wake Up!Win a game in Nightmare mode Smash!Win a game in Smash Storm mode Just Getting StartedWin a game in Infinite mode Get off my lawn!Win your first minigame level in Story mode Sudoku!Win your first Sudoku What a nightmare!Beat 100 Nightmare levels Will this ever end?Reach level 100 in Infinite mode Smash Storm!Reach level 100 in Smash Storm Hidden HavenComplete the Hidden Haven levels Rocky RetreatComplete the Rocky Retreat levels Nebula NookComplete the Nebula Nook levels Not the bees! Delete all cookies Guac-a-Mole Ice Ice Denture Nightmare VeteranBeat 500 Nightmare levels Infinite VeteranReach level 500 in Infinite mode Smash VeteranReach level 500 in Smash Storm Nightmare MasterBeat 1000 Nightmare levels Infinite MasterReach level 1000 in Infinite mode Smash MasterReach level 1000 in Smash Storm