Original: This camper has met the qualifications of a certain episode's challenge(s) to win the challenge and its prize (mostly solo invincibility) for themselves (Episodes 15-27 - After the Teams dissolved).
Simplified: This camper has met the qualifications of a certain episode's challenge(s) to win the challenge and its prize (mostly team invincibility) from another camper (Episodes 1-14 - Before the Teams dissolved).