Low% rules in Necrodancer disallow you to pick up any item, meaning you can't easily heal, you are typically stuck with weak weapons, no armor, and very little health. There is an achievement to beat 9 of the original characters in a row following the Low% rules which I've already completed so I decided to do all the DLC characters as well. I didn't do them all in a row however.
Timestamps
0:00 Nocturna
16:56 Diamond
28:31 Mary
49:44 Tempo
1:00:02 Klarinetta
1:15:45 Chaunter
1:30:57 Suzu