Unfortunately it doesn’t work with the release version. Most likely the demo was an early preview using Unity engine. The full version uses the developer’s in-house Z-Engine. Other than Skullgirls there seems to be just one other game built with this engine.
I tried various either profiles, hooking methods and display modes. Most don’t even hook and when they do there’s no 3D.
Reshade + Depth3D does hook and can extract the depth map. It’s not perfect though, player characters are not registered in the Z-buffer and will stick to whatever is behind. Fine detail like foliage is also not registered. Strangely NPCs have correct depth information.
The game is also locked at 60 FPS.