Here is the full list of all 17 Bad Pad Demo achievements.
Finish the demo
Win your first arcade mini-game
Collect 20 coins
Defeat Evil Pen again
Get Drop Bash upgrade
Finish area 1.3
Finish the second carting level
Finish area 1.2
Get glow in dark upgrade
Win your first battle against Evil Pen
Finish the first carting level
Meet Analog, he will help you!
Open and go through your first door
Collect your first coin
Blow up your first rock
Find and talk to TrapeZoid
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