Thank you so much for leaving such a thorough comment! I'm glad you're enjoying the game so far.
I will put all of these bugs on my to-do list and get them fixed as soon as I can. I'm currently working on implementing TMs, which will function like held items, and grant an additional special attack, as well as some much needed balance updates. Soon as that's up and running, I'll get to fixing the other things.
Auto shooting is on the drawing board as well. I completely agree it's a much needed addition. I'll be working on an endless mode fairly soon, where an upgrade like that is not just nice but borderline NEED to have lol.
In regards of the speed upgrade, it's something a few people have mentioned on Reddit, but I'm honestly not sure if I want to implement it right now. It'll take some serious reworking of quite a few systems, which I'm not looking forward to. I have recently cut down on the amount of waves on many of the areas, which should help eliminate some of that grindy feeling.
The import/export saving system was actually my first edition, and I had that ready for 2 weeks before releasing the first Beta, but I've never worked with HTML5 on Gamemaker before. My original system opened dialog boxes in order to read and write the data. When that broke I tried a version using the clipboard, but most of my ideas so far has been cucked by limitations on HTML5 and security measures on Itch. I would LOVE to get a working port system up and running, but I'll need to look a bit further into how I can get around these limitations, as I'm very new in game development. This is my first ever "finished" product lol. I'll look into your idea as soon as I can. If I can manage it, I would love to have the original saving system back.
Thank you for playing and for you nice comment!