Symphony of the Night: help with the prologue

[Ovnidemon]

I wish to have a bit of help with the prologue of Symphony of the night. I try to max my starting stats by killing Dracula under 1 min, no damage received and no sub-weapon (For OCD and stuff). The problem is that I am no very good at it, especially since I have a XBox 360 joystick (which has a pretty bad D-pad).
So, do you have any idea that can help me with that, be it cheat or PPSSPP functions? (I already know of the save function and the slow down)
For those not knowing the game, the best way to deal damage is via a combination of touch (Directions counterclock-wise + attack) but you need to do it mid-air, so fast enough.

I welcome any idea and thank you in advance.

PS: it's my first PPSSPP game and I don't have a lot of experience with the emulators.