Here is the full list of all 26 BIT.TRIP RUNNER achievements.
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
Roast your mallows over a campfire
Get the Game Over
Beat all challenges on Perfect difficulty
Complete a level in one sitting
Get a PERFECT on one challenge
Watch the hidden cutscene
Complete Triumph
BURGER MOUTH
Complete The Gauntlet
Repel 100 Beats
Complete Tenacity
Complete Impetus
Complete Odyssey
Collect 1,000 Gold Bars
Jump 1,000 times
Register a high score on the leaderboards
Complete a bonus challenge
Get CommanderVideo's cape
Get a PERFECT score in all Impetus Challenges
Get a PERFECT score in all Tenacity Challenges
Get a PERFECT score in all Triumph Challenges
Get a PERFECT in all challenges
Catch a fish!