I love bullet hell games (I actually run Bullet Hell Jam), so I was really excited to play this! It at least feels like you have played a shmup before, which is a very good start. It is an ok concept, strongly hampered by the performance constraints on the server. I think virtual joysticks don't work particularly well for this sort of game, but that might just be down to the poor performance. I liked the addition of the areas players had to move towards, but I really had no idea what they did. I also found that I could pretty much just sit in a corner for the entire game without too much damage. It might be worth moving to more traditional "lives" rather than a healthbar. The health bars are obscured by the partytime UI, which is something I found frustrating in my own game too!
The later weapon/ projectile upgrades definitely make the game more enjoyable, so good job there - I wonder if you could randomise the starting loadout too? 🤔 that might aid the camping problem too, since I made it to round 10 without moving at all. I do think you could get a LOT more creative with patterns, too.