Here is the full list of all 30 Surgeon Simulator 2 achievements.
Complete a level as Milo
Complete a level as Kamal
Complete a level as Penny
Complete a level as Heather
Change outfit for any character
Change hat for any character
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
Meet Bob
Perform a successfulheart transplant
Perform a successful kidney transplant
Perform a successful lungtransplant
Perform a successful stomachtransplant
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