Complete the Winter Games
Collect 40 power cells in one run.
Respawning will not count against you.
Float outside the tunnel long enough to flip upside-down, then land safely inside.
Hint: This is probably easiest with the skater, on level 19 in Explore mode.
Dislodge 700 tiles.
Complete level 40 in Explore mode without dislodging any tiles.
Run 400 meters in Infinite mode.