Here is the full list of all 28 Robby's Adventure achievements.
After that he decides to commit suicide
Collect 1000 cogwheels
Complete New Year level
Collect 60 snowflakes
Open 30 presents
Launch a New Year Level
Launch a Halloween Level
Complete all bonus levels
Find Super-Cogwheel.
Die 100 times
Scan yourself.
Get a spring!
Get a plane!
Find a car
Unlock 1 level from Group B
Get a tank!
Escape the tank.
Collect 100 cogwheels
Fix the running
Push 5 items
Collect 70 Cogwheels
Collect 50 Cogwheels
Collect 20 cogwheels
Collect 10 cogwheels
Die 1 time
Get Screwdriver
Really?