Desire & Ice is a special mission unlocked at Rank 45. The player must defeat many waves of frozen bloons and defeat Kosatsu at the end in the Desire & Ice track. The player starts with $1000 cold hard crash and earns twice the amount supposed to get at the end of each round. All bloons (not blimps) are frozen. Frozen bloons are just like normal frozen bloons, but they move normally and are immune to ice and DoT damage. The player receives 500 MM and the achievement "Cold Blooded" worth 50 AP if the mission is completed.