Thanks for playing and your feedback is much appreciated. It seems there has been a bit of misunderstanding from you, or rather I as a developer failed to communicate with you by my design. The prosthetic broken sign was supposed to be a death screen but I was just lazy to make the player stop moving and figured they could restart the level anytime. secondly the attack in which the boss recover health is supposed to be a jumpable only attack (it plays the mentioned audio cue in the controls). The attacks are not seemingly random, the boss has combos and they just choose a random combo at first then after they finish the first combo, they choose another random combo and so on, you just lucked out and they didn't choose any combo with that attack xD. The last thing is the missing health bar, actually it exists which is the circle like thing in the bottom right, this is a design mistake on my behalf since it is was supposed to be the shoulder of your prosthetic but that ended with it failing to communicate itself being a health bar since it strayed from conventional designs like color coding (being red or green or having a + symbol) I may patch those things out since they were brought to me by my friends as well. Hope you recommend the game to your friends and have enjoyed yourself :). You playing and even commenting and giving me feedback is what I strive for as a game dev thank you again.