Windmill

Hmm, that's a doable coop. If the 2 players can do slow rushs with the low av for coops, this can be kinda easy. But it depends on the reading of both of them.

It's not super difficult, but the runs are faster than expected, making it a bit hard to switch positions. Therefore, gauge management is key.

A chart where the same pattern appears alternately for 1P and 2P. One person runs while the other holds. Since it's 8-beat at 246, it's practically 16-beat at 123.