Here is the full list of all 22 Wunderdoktor achievements.
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).
Complete the Almanach.
Collect 100 Waxlings.
Find a purpose for the Wedding Ring.
Collect all Special Scraps for the Almanach.
Complete one entire page of the Almanach.
Feed 50 delicious baked goods.
Finish Act 5.
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 Party Invitation.
Catch the bug.
Finish Act 1.
Find a purpose for the Cigarette.
Find the first almanach scrap.
Your very first patient!