*medal spoiler* Low-skill way to destroy all five frosty foes in one day. In the Bonus Shop, buy the bonus that allows you to adjust the ramp, and set the slope to flat or less (I went with the absolute lowest setting). :
Sleigh: high "speed" and low "take off"; Glider: low "flight" and high "top speed"; Boost: your choice of highest 4-shot or Toggled with highest possible thrust; Payload: the best possible :
My setup: Superslide, Omeglider, Solid Booster, Dark Matter (obviously, unlocking the Omega Catalog in the Bonus Shop makes this even easier)