Here is the full list of all 26 Unruly Heroes achievements.
Finish a level without losing any character
Play the whole adventure
Complete world Flaming Mountain
Complete Underworld
Complete world Taoist Temple
Perform a 20 hits combo
Obtain 1000 coins
Complete world Skull Canyon
Kill the Skull Canyon boss
Play a Multiplayer match
Enter inside a controllable creature
Grab two enemies in less than 10 seconds
Perform 100 walljumps in total
Obtain 100 coins
Complete first Skull Canyon level
Unlock all checkpoints of a map
Kill one of you coop friend
Reach 200 meters in gliding distance
Activate any character's power
Obtain all scrolls
Obtain all skins
Complete one level under 5 minutes
Trigger 4 power up at the same time
Finish any level at emerald rank
Finish all levels at emerald rank
Finish any world at emerald rank