Thanks for the feedback! Glad you enjoyed the presentation of the game. Some of your issues can be answered; the game is built to be repetitive (that's just the nature of it), your controls got stuck because you clicked outside of the game window (this un-"focus"es the game on your computer, repeating any input you had pressed until you click back in), we aren't really fans of showing important game hitboxes or dev tools such as showing the hitbox (but thanks for the suggestion!), there is a dash move that is invincible if you press space (this will easily help avoiding the tightly packed attacks (in fact it's the intention)), the difficulty resetting when you die is intentional (it helps make sure you didn't pick such unfathomably difficult upgrades that respawning the boss with them would be annoying and way too hard), the difficulty resetting after beating the genie is a bug (read the description for more information) however the gist is that you didn't miss any gameplay.