Here is the full list of all 18 Teenage Blob achievements.
Finish the game.
Clear the Mega-gap.
Gobble 7 hotdogs.
Collect 8 bananas.
Hit 100% of notes.
Hit 90% of notes.
Deliver 8 sandwiches.
No mean replies.
Feed 3 dogs.
Sandwich 4 cat callers.
Stop cycling and take in the view.
Smash 6 non-subscriber windows.
Leave with no pants on.
Only mean replies.
Miss 90% of notes.
Finish talking before the boss shows up.
High-five the person in the window.
Deliver 6 high-fives.