Here is the full list of all 22 Wunderdoktor achievements.
Collect 100 Waxlings.
Complete one entire page of the Almanach.
Find a purpose for the Party Invitation.
Find a purpose for the Cigarette.
Feed 50 delicious baked goods.
Finish Act 5.
Collect all Special Scraps for the Almanach.
Find a purpose for the Ghostly Jewel.
Finish Act 4.
Help the Ocean Detective with his second task.
Help the Ocean Detective with his first task.
Finish Act 3.
Find a purpose for the Chicken Leg.
Finish Act 2.
Find a purpose for the Wedding Ring.
Catch the bug.
Finish Act 1.
Find the first almanach scrap.
Your very first patient!
Complete the Almanach.
Play the game from start to finish without any patient deaths (except the first, unavoidable one).
Play the game from start to finish without taking any damage & without any patient deaths (except the first, unavoidable one).