Here is the full list of all 30 Surgeon Simulator 2 achievements.
Perform a successful stomachtransplant
Complete a level as Kamal
Perform a successfulheart transplant
Meet Bob
Change hat for any character
Change outfit for any character
Complete a level as Milo
Complete a level as Penny
Complete a level as Heather
Change finger accessory for any character
Change wrist accessory for any character
Finish tutorial
Finish story mode
Get an A grade in every story mode level
Get an A+ grade in every story mode level
Place a duck in Bob's chest cavity
Perform a successful kidney transplant
Perform a successful lungtransplant
Perform a successful head transplant
Win a multiplayer match
Win 10 matches
Win 10 matches consecutively
Reach level 10
Reach level 25
Reach level 50
Create a level (load up a new level in create mode)
Place 10 unique props in create mode
Apply 10 unique textures in create mode
Create a locked door and unlock it in create mode
Play a custom queue