Here is the full list of all 28 Manual Samuel achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Unlock all the Achievements in Manual Samuel
Get bronze or higher on every time trial
Get silver or higher on every time trial
Get gold on every time trial
Completed Sams house only breathing in 15 times
Complete Story Mode Single Player
Found every hashtag
Kill every robot
Blow up Tony
Spoke perfectly
Went to work without shoes
Drove 150 km per hour
Made no stains on yourself
Tip Tony
Complete Story Mode Co-Op
Complete Level 8
Didn't skip any cinematics
Complete Level 7
Complete Level 6
Complete Level 5
Blink 2000 times
Complete Level 4
Complete Level 3
Drink two cups of coffee
Didn't fall down the stairs
Skipped a cinematic
Complete Level 2
Complete Level 1