Here is the full list of all 26 BIT.TRIP RUNNER achievements.
Get a PERFECT score in all Triumph Challenges
Get a PERFECT in all challenges
Get a PERFECT score in all Tenacity Challenges
Get a PERFECT score in all Impetus Challenges
Get Bonked by a monster
Find 3 friends and beat the challenges they are in
Bonk after missing a Gold Bar to rewind time and try again
Beat all challenges on Perfect difficulty
Get the Game Over
Watch the hidden cutscene
Complete Triumph
BURGER MOUTH
Complete The Gauntlet
Repel 100 Beats
Complete Tenacity
Complete a level in one sitting
Catch a fish!
Complete Impetus
Complete Odyssey
Get a PERFECT on one challenge
Collect 1,000 Gold Bars
Jump 1,000 times
Roast your mallows over a campfire
Register a high score on the leaderboards
Complete a bonus challenge
Get CommanderVideo's cape