Amazing game! I really like the visual effects when shooting and how crazy it got with multiple projectiles. The risk-reward system in this game was so good as you can choose whether to buy upgrades or save your core, and whenever you leave the combat area, your progress in it resets, making you want to stay for more time. This game actually made me want to play more and more, and the only critique I can give is: more accurate scale bar - when you feed the core, the bar doesn't match up with the amount you are giving it (it continues to fill up after you leave) so you don't always know how much you need to give it and how much you can keep. Also more enemy types obv and more rooms with harder enemies but better rewards, but this is obviously a 4 day jam only so its amazing you were able to get this far anyways. Great job :)