Checkpoints 9, 5 and 10 (guardian, trash, boss) all fall pretty easy to summons. Though to be fair I do use soulreaper level charms.
Checkpoints 3 and 4 do not fold to summons. 3 was interesting. I didn't like 4 at first because it seemed like the first couple of charms were hiding something, but then I realized that it was actually pretty straightforward and just about timing. Good stuff, really.
Hopefully I'll get to try the raid tomorrow.