Really dig the mechanics behind this one. Would be fun to see the parry's used to shoot back projectiles to destroy some turrets, or perhaps even the occasional reversed polarity bullet shooting you in the opposite direction, but can understand that'd be tricky to do in any areas requiring platforming and in two days at that.
The aesthetics made everything going on quite readable, keeping the challenge purely on figuring out and executing a plan of ascension. Superb work.