Ah, the classic accidental god-mode exploit! That is a brilliant find.
It turns out my game-over safety check worked a bit too well: once the game ends and you somehow find a way to resume it, the game-over screen is locked from triggering ever again, leaving you functionally immortal at 1 HP.
Thank you so much for pointing this out! I will definitely fix this logical loop and disable pausing after death in the post-jam update.
I see you submitted RealmLink to the jam. I am actually launching your game right now to play and leave a rating. Can't wait to check it out!