No missable achievements (plus 22 unknown)
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Run a total of 1000 meters.
Collect a total of 1,000 Coins.
Get Knocked Out 100 times.
Jump over a total of 150 traps.
Slide under a total of 150 Traps.
Completed the Story.
Run at least 150 meters in a Single Portal Run.
Collect 100 Coins in a single Portal Run.
Jump over 25 Traps in a single Portal Run.
Slide across 300 icy tiles.
Slide under 25 Traps in a single Portal Run.
Walk over a total of 200 invisible tiles.
Completed Episode 2.
Ride Hoody a total of 30 times.
Activate a total of 100 switches.
Used 100 Balloon Basket rides.
Become an Ice Cube 100 times.