Huge thanks for the detailed comments! This kind of feedback really helps our development a lot! :)
- for the movement speed, we do have some ideas for passive items that you could get to upgrade certain stats, like speed of the ship and damage of the weapons
- we've gotten many comments about the hitbox, and will definitely look into it, making it smaller so it fits the bullet hell genre a bit better
- the XP loss mechanic requires some balancing, and is as well on our list
- HP recovery has also come up in the comments rather frequently, and for that we have some ideas already, like maybe a shop that you could purchase HP from between stages, or a passive that would give you health regeneration upon killing X amount of enemies or over time
- the boss thing is true, there we don't have anything thought out yet, maybe if the initial enemy stage was longer, or the XP gain was higher, the player would have time to build up a larger weaponry and have room for long range weapons as well, or maybe there should be some i-frames before the boss stage actually begins
- the weapon balancing is also a work in progress, laser hose is rather weak compared to the missile barrage, and the chance of it actually showing up needs to be looked into as well