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