Full list of all 48 Open Hexagon achievements.
The base game contains 23 achievements, and there are 3 DLC packs containing 25 achievements.
Complete all the "Hypercube" pack achievements
Survive for 90s in "Incongruence"
Complete all the "Cube" pack achievements
Reach level 7 in "Commando"
Survive for 60s in "Apeirogon"
Survive for 60s in "Euclidian Plane Crash"
Survive for 60s in "Pi"
Survive for 60s in "Massacre"
Survive for 45s in "Reppaws"
Survive for 60s in "Slither"
Survive for 90s in "Acceleradiant"
Survive for 60s in "Polyhedrug"
Survive for 60s in "Second Dimension"
Survive for 45s in "Centrifugal Force"
Survive for 90s in "G-Force"
Reach level 7 in "Labyrinth"
Survive for 60s in "Golden Ratio"
Survive for 90s in "Disc-o"
Complete the "Evotutorial" level
Immediately hit a wall after performing a 180° swap
Survive for 90s in "Flattering Shape"
Survive for 120s in "Pointless"
Complete the tutorial level
Cube Complete all the "Cube" pack achievements at the highest difficulty multiplier
Survive for 45s in "Apeirogon" at the highest difficulty multiplier
Survive for 45s in "Pointless" at the highest difficulty multiplier
Survive for 30s in "Euclidian Plane Crash" at the highest difficulty multiplier
Reach level 6 in "Commando" at the highest difficulty multiplier
Survive for 30s in "Flattering Shape" at the highest difficulty multiplier
Reach level 6 in "Labyrinth" at the highest difficulty multiplier
Survive for 20s in "Second Dimension" at the highest difficulty multiplier
Survive for 30s in "Pi" at the highest difficulty multiplier
Survive for 45s in "Golden Ratio" at the highest difficulty multiplier
Successfully send a score to the Open Hexagon server
Successfully login to the Open Hexagon server
Complete all the "Hypercube" pack achievements at the highest difficulty multiplier
Survive for 45s in "Incongruence" at the highest difficulty multiplier
Survive for 30s in "Reppaws" at the highest difficulty multiplier
Survive for 30s in "Centrifugal Force" at the highest difficulty multiplier
Survive for 40s in "G-Force" at the highest difficulty multiplier
Survive for 40s in "Disc-o" at the highest difficulty multiplier
Survive for 45s in "Polyhedrug" at the highest difficulty multiplier
Survive for 30s in "Massacre" at the highest difficulty multiplier
Survive for 30s in "Acceleradiant" at the highest difficulty multiplier
Survive for 30s in "Slither" at the highest difficulty multiplier