Thank you so much for playing and leaving such thorough feedback, it's very much appreciated!
I've just rolled out a new patch, which should fix most of the obvious issues the last version had.
All (i think) of the game breaking bugs, such as items staying on prestige, enemies not spawning, all specials usable on first evolution, enemies not aiming exactly towards player and the wayyy overpowered Poison Barb to name a few. Some of these I wouldn't even have noticed without you, so thank you lots for that!
The save functions took a while to get working, being the main reason for the slow update, but it seems to be working now (AT LEAST I HOPE IT DOES!!!!!)
In regards of the high amount of waves, I haven't changed that for now. I thought I should let you know that the later stages from 9 onwards are TOUGH, and I honestly don't think it's possible to beat them without prestiging a few times for upgrades and stronger pokemon. This was a design choice from the beginning, mostly since Level 12 is the final level of the game right now.
That being said, as soon as I have some player feedback on the later levels, I will definitely revisit the idea of changing up the waves.
I plan on creating an infinite mode as well to kind of combat this mindset of mine.
For now, I've kept the single held item. Mainly because it will take a bit of rewiring of the whole held system, but I do like your idea, and I might revisit that aswell.
Also, I'm loving that you enjoyed the Wiki haha I honestly just love when these types of games has a place with a bit more knowledge only the developers would know. I'll keep updating that as time passes as well :)
All in all, I wanna thank you for your amazing comment. Hoping to hear your thoughts on the new update!