Here is the full list of all 11 Among Dots achievements.
Great you defeat Boss 1
Great you defeat Boss2
Defeat 4 ghosts in one stage
Defeat 8 ghosts in one stage
Defeat 25 ghosts with no continue
Defeat 50 ghosts till the end (allow to continue)
Hit 30 ghosts in hammering stage
Happy Ending with Ramen
Never hurt ghost till the end
Defeat 100 ghosts till the end (allow to continue)
Collect all energy dots in one stage.