I played quite a bit of this game casually a few years back, and now that I've started speedrunning my favorite games, I think it's time to give this one a shot. I've been able to do normal any% before, just because the thought intreagued me at the time. I think i've also attempted hard any% in the past. Again, I haven't played this game since I beat every mode like 2-3 years ago. Well if anyone is still around let me know :) I look forward to mastering this game
You cannot use anything that's not provided within the game itself. You can alter the controls to make expel easier, but if your macros require an outside program than they are not allowed.
Oh, I had assumed when I first played that there was no way to automate expel in-game. I see now that setting every "Alternate Direction" to the same button allows you to expel instantly. That's a neat trick i wish I had years ago XD And on keyboard you can just hold down all the arrow keys at the same time for the same effect.