Hi!, thanks for playing it and for the feedback!
Sorry I didn't have time for a tutorial, you can easly oneshot enemies increasing your power over POWERx10, to do so you have to hold your combo, and finish/start new combost whithout too much time delay between them.
If you get damage or lose the balance of a spin trick you fail the combo and all your power in the process.
If you want to give me a contact I can DM you and I can show you on screen share on discord.