I greatly appreciate the in-depth critique! We're really interested in revisiting the idea after the jam and improving upon it for potentially a full game, so feedback like this is extremely helpful.
The bug with the character not moving out of the doorway was unfortunately a bug we discovered after release; if the character is currently paused and the restart button is used, we neglected to properly set some of the flags in the character. This causes them to not leave the doorway upon the first time the play button is pressed; however, if the game is subsequently paused and played again, the character will start moving. I'm sorry to hear that you had to restart the webpage entirely, I'm sure that was fairly annoying.
As for the second bug, we never encountered that in our playtesting, so again I'm sorry to hear that you encountered that :(
We tried to address the convenience of re-placing arrows by letting players pick up already placed arrows and move them around; perhaps it stopped working when you played?
Lastly, we did try to design the tutorial to be as hands-off as possible; the first level was intended to provide a safe space for the player to learn what all the UI buttons do, how to place arrows, and also hopefully teach that allowing the character to see a pot is bad, and that the line of sight to a pot can be broken by rocks. We tried similar hands-off approaches to tutorializing the other aspects of the game, such as the level where you're forced to pick up the ladder to cross the one-block-wide gap, thereby teaching the player that that's what the ladder does.
I'm glad you enjoyed the game regardless! Again the feedback is incredibly appreciated, thank you for taking the time to articulate it.