Hey thanks so much for playing and for the kind words! :D
Really happy you liked it and thanks for the feedback!
1. Yes I'm planning to add a way to skip through the lil animations where it draws your route and totals up the gems and stuff, it's on my endless to-do list haha
2. Yep I know what you mean, there's a few seconds at the start you can't shoot yet but enemies start appearing - I've thought about tweaking this a few times, something I'll look into at some point for sure
3. I've thought about adding some sort of reserve slot(s) for cards like you've said, I'm slightly worried about overcomplicating the user experience in the pause/card screen, but it's something I might well look into playing around with!
Thanks again ! :D