This was fun, although reading the 3D space (when bullets hit and how to target enemies) felt really awkward, but maybe that's just a skill issue on my part.
The uncapped acceleration is silly. In a fun way. I eventually sort of memorized the environment and just blasted through the levels while comboing enemies by wildly flailing around with the mouse. God bless the combo SFX.
Managed to beat it with a time of 2:16.16.
Good time was had.