I don't know if everyone else is having this problem, but once I reach the end of the last room before the boss and I try to go to the right off screen to trigger the green flash to take me to the boss room, I just fall off the edge and get a game over screen. Then, when I press retry, I end up in the boss room and the boss isn't moving (he's in like a standing animation) and my arrows go right through him without damaging him. I can also walk through the wooden gate in the boss room on the far right and I (again) will get a game over screen. Then, when I press retry, I get a screen where my three hearts are flashing, a brown background, a grey floor, and an arrow meter in the upper right corner filled to capacity (with no hero insight).
I like the game (even though it is probably pretty short). I really hope this gets fixed. I want to see how this ends.