Thank you for playing my game!
The respawn thing with the enemies still in the room is because it's not you anymore, it's the other prisoner! xP (And it was made to fit the loop theme). If you die, you drop the bow, in order for the next prisoner to pick it up.
For the skull thing, the collection becomes available only when the "boss" (the larger enemy) dies. Then you have 30 seconds to collect 8 skulls in order to open the hatch (witch leads to a win). As soon as the boss dies, the doors at the top start spamming enemies. If the boss respawns (30 seconds) and you haven't won yet, you drop all the skulls, and have to start over (kill the boss > collect another 8 skulls > find the hatch to escape).
The click-to-shoot thing is a recurrent complain, I will address that issue after the jam as you suggested (by having a rate of fire and just holding the lmb). :)
Thank you very much for your feedback!