I completed the game, I'm not sure I did it right, eventually the boss followed me or something, what's sure is that I reached the end without fighting it, which might be the good way or not, probably not but it's fine either way.
Being able to annotate the map is a very cool feature for such a short dev time. The game is fun, the level is big considering there are only three types of enemies but fights are short and with a map navigation is not an issue so it kind of ends before it gets repetitive.
Very cool game, thanks for sharing.