Here is the full list of all 57 Super Rude Bear Resurrection achievements.
Defeat Riddim.
Get through the spiky tunnel at the start of 2-5 by riding a corpse.
Complete every level in Castle World without dying, including bonus levels.
Complete every level in Iceworld without dying, including bonus levels.
Defeat Flow.
Beat 2-2 without touching any icicles.
Beat the tutorial in under 26 seconds.
Skip the descending lift in 1-4.
Finish 1-2 without touching the travelling block for more than half a second.
Defeat Germ 'n Whip.
Complete the Tutorial. Good luck!
Defeat B-Boy
Defeat Wasteman.
Defeat Dark Rude Bear
Defeat The Wizard
Find something out of place.
Reach the second coffin in 1-5 in under 8 seconds.
Get to the second coffin in 1-B3 in under 8 seconds.
Finish the last corridor in 2-1 by jumping under the icicles.
You should pay attention to The Fairy.
Jump on every block in the final corridor and beat the boulder to the exit of 3-2.
Survive for 30 seconds in the cog room of 4-3 on at least V mode.
Beat the Red Snake corridor in 3-4 with 0 corpses.
Destroy all sand blocks in one life on 3-4.
Get past the final shaft in 4-2 without wallsliding.
Go backwards in 4-3 from the final coffin to the previous coffin.
Pass the third frost laser on 4-4 without stepping off frosty ground.
Beat 5-3 with less than 50 jump button presses.
Beat 5-4 with less than 30 jump button presses.
Found Rudey's dark secret.
Spend 10 minutes under the fleshwater in 6-1.
Get to the 4th coffin in under 28 seconds on 6-2.
Ascend the vertical shafts in 6-4 without activating each spitter more than once.
Beat 6-3 in less than 30 jump button presses.
Hop over the sand platforms in 6-5 without touching the bottom row.
Beat 6-5 on Iron without pushing against Dark Rude Bear.
Beat the third deathclock on 7-4, only touching the marked platform
Complete one section 5 times on Practice Mode.
Complete Castle World in one go with only one hand.
Complete Iceworld in one go without dying or fighting Flow.
Beat Temple in under 8 minutes in one go, collecting all the fairy statues.
Complete Factory in one go with less than 300 jump button presses.
Complete Spacestation in less than 10 deaths in one go.
Beat Fleshworld in under 5 minutes 30 on V Mode in one go.
Beat Hateworld in under 10 minutes on Iron mode in one go.
Complete every level in Temple World without dying, including bonus levels.
Complete every level in Factory World without dying, including bonus levels.
Complete every level in Spacestation World without dying, including bonus levels.
Complete every level in Fleshworld without dying, including bonus levels.
Complete every level in Hateworld without dying, including bonus levels.
Complete every level in the game on at least Iron.
Complete every level in the game on at least V.
Complete every level in the game in 10 or less deaths.
Collect every Fairy statue.
Beat the Boss Rush Marathon without dying.
Beat the Full Run marathon in under 2 hours 10 minutes.
Collect every other achievement.