Here is the full list of all 53 Tiny Barbarian DX achievements.
Electrocute a Tiny Clone
Defeat the Parrot boss within 75 seconds
Beat Axeman in under 35 Seconds
Knock someone off the caravan
Clear Episode 3
Flatten a Zombie
Defeat the Blobcat within 45 seconds
Collect all the Secret Diamonds (Ep 2)
Clear Episode 1 without dying
Clear Episode 1 in under 35 minutes
Collect 200 coins in one life
Kill six Guardian Bees in one level
Kill 12 Bees worth 25 points each in a single stage
Collect all the Secret Diamonds
Hit with an angled Elbow drop
Jump off the first cliff you can find
But damnit, you got here!
Beat a gnome unconscious
Defeat Serpent Lord in under 90 seconds
Beat Pitmaster in under 50 Seconds
Finish a stage without getting off the cat
Last 2 minutes against the horde
Try to stop an enemy by flexing!
Clear Episode 2
Defeat the Ape 'King' in under 50 seconds
Get 9 apes on screen at once, then kill them
You found a Secret Diamond!
Elbow drop a Vulture
Clear Episode 1
Last 60 seconds against the horde
Clear Episode 2 without dying
Clear Episode 2 in under 50 minutes
Get through the big bee ride without dying
Collect all the Secret Diamonds (Ep 3)
Don't kill any dogs
Clear Episode 3 without dying
Clear Episode 3 in under 45 minutes
Fall forever
Defeat the Cimmerian Boar within 50 seconds
Clear Bonus Episode
Clear Bonus Episode without dying
Clear Bonus Episode in under 9 minutes
Collect all the Secret Diamonds (Bonus Ep)
Get launched by the Queen
Don't let the final boss eat anyone
Clear Episode 4