i really like the idea of having to fight "yourself" as a boss. forces you to make some interesting decisions during the waves (should i stand still and not shoot for as long as i can so i have an easier boss battle? or will i get overrun during the wave if i do that?). i like the variety of weapons and upgrades, and did a few playthroughs to see how each of them played. the only bug i encountered was that the dialogue box wouldnt go away when i fought myself, which made the bottom part of the screen near unusable. i think making the space ship a bit smaller could smooth out some gameplay. its a bullet hell, after all, and there are sometimes so many projectiles on screen that its impossible to weave through them. you have enough health as is that you can pretty easily tank a few shots during those situations, but i think a smaller but squishy ship would make it a bit more tense. small suggestions, only because the core gameplay is already so polished and complete. incredible entry for a jam, well done!