Momentum combat, first pass
The rule at the centre of Split Black's combat is that speed is a resource. Here is the first version and what broke. Example post.
This is an example post. Replace it with your own.
The rule
Speed is a resource. A meter fills while Black is moving fast and drains when he stops. Attacks spend from it, so the route through a room that keeps the meter high is also the route that hits hardest.
What worked
Blending the upper-body swing over the running animation kept the legs moving through a three-hit combo, so hitting never feels like stopping.
What did not
The first version drained the meter too fast on landings. A hard landing is not the same as stopping, so it now only drains when horizontal speed drops below a threshold.
Next
Teleporting to a thrown shuriken should keep the meter alive across a gap. That is the next thing to build.