I'm glad to hear you enjoyed it! The timer is certainly quite strict, I think it's my SEGA influence showing, heh. I'd be happy to make it more lenient - the final game should have adjustable difficulty for both the time limit & rival speed/aggression.
And yep, customised controls are a full-release target (I'll also include keyboard controls soon). If you mean analogue triggers, though, they should work without any changes necessary, so please do let me know if triggers aren't working - I'd like to look into it.
Thanks again for the kind words and suggestions! :)