What does "二人要通过许多小的管卡" mean? From what I see from google, "管卡" is some sort of metal clamp? Would the phrase mean something like "the two of them passed through many small mechnisms"?
Shouldn't that be 关卡 = checkpoints, barriers？

二人要通过许多小关卡

2 people must pass through many barriers

Some kind of fun sports competition.