Thank you for taking the time and playing it again! About the third boss, that is what I mentioned in the description, I couldn't code the You Won screen on time :(
I will surely adjust the balancing of the weapons, luckily I just have to change a few numbers so once the Game Jam it's finished I'll do it. Maybe with more time I'll add more features, that reverse shooting idea is ver good. Also, the saving of your progress through the stages is intended. Thanks playing it! :)