Here is the full list of all 29 Edna & Harvey: Harvey's New Eyes achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Multiple endings? I need to see 'em all.
Finish chapter three.
Defeat the Mother Superior.
Defeat all Harveys.
I hate mini games!
If in doubt - give him a clout!
Droggeljug!
I hear someone singing ...
Sleep!
Did someone here order a pizza?
Row, kid! Row for your life!
They don't really have quicktime events in this game, right?
Lilli's arms were too short.
Finish chapter two.
Hoo hoo. Whit woo. Terwit terwoo.
Find the right path.
Justice prevails.
That doesn't apply to me.
Aaaargh!
Even the sun follows my command!
I need more coffee! More!
I think I've been here before ...
Finish chapter one.
Floating in the summer sky.
Shibuya power!
X marks the spot.
Help the old man.
How's that supposed to help?
I don't need no tutorial!