Here is the full list of all 13 Chunky Tomato Demo achievements.
Become a chunky tomato.
You've been run over enough times to make a family pizza.
Complete the first level successfully.
You've run through nails 20 times.
Successfully complete 5 levels and earn 3 stars each.
Stick to a piece of chewing gum 20 times.
You've stepped in broken glass 20 times.
You've stepped in a cigarette butt 20 times.
You have collected 20 blue juice drops to improve stamina.
You have collected 20 orange juice drops to shorten the cooldown for jumping.
You have collected 20 booster drops.
You have collected 5 drops within 10 seconds.
Get stuck on a piece of chewing gum and get run over by a car while in a daze.