Here is the full list of all 50 Doughlings: Arcade achievements.
Morph 75 times to Smash.
Shot 50 Killers.
Fully upgrade all heroes.
Fully upgrade Smash.
Complete all Secret levels.
Fully upgrade Gunner.
Fully upgrade Bedrock.
Heal 50 Psychos.
Fully upgrade Webster.
Complete 75 levels with 3 stars.
Complete 75 levels.
Teleport your ball 50 times between wormholes.
Bounce ball from hero 5000 times
Bounce ball from walls 10000 times.
Fully upgrade Spook.
Banish 100 Ghosts.
Unlock all heroes.
Fully upgrade Robo.
Complete 50 levels.
Heal 50 Flu targets.
Show Off with Morpheus 100 times
Heal 500 Red targets.
Save 100 Stuck targets.
Complete 25 levels.
Shot 500 bullets with Gunner.
Destroy 100 Petrified targets.
Show Off 100 times.
Catch 100 balls with Robo
Fully upgrade Morpheus.
Fully upgrade any hero.
Morph 100 times.
Heal 500 Yellow targets.
Complete 1 secret level.
Die 10 times.
Heal 500 Green targets.
Heal 500 Blue targets.
Upgrade any hero with one slot
Complete a level by clearing the screen before the time runs out.
Get your first 3 stars.
Morph 75 times to Bedrock.
Morph 75 times to Gunner.
Morph 75 times to Robo.
Morph 50 times to Spook.
Morph 75 times to Webster.
Show Off with Bedrock 50 times.
Show Off with Gunner 50 times.
Show Off with Robo 50 times
Show Off with Smash 50 times
Show Off with Spook 50 times
Show Off with Webster 50 times