Hello. Sorry about the issue you had. Since the previous versions of the game were developed on Godot 3 (0.0.2.X), and the new versions (0.0.3.X) were developed on Godot 4, the save files are not compatible. This probably resulted in the game not being able to properly get you out of the level at the end. I will try to replicate the issue here.
It seems like you played level 1-3 based on the description. Indeed an alternative path could be added to give an option for the player to give up a collectible and move on with the level, in case the they run out of the required ammo. That would be more fair.
Thank you very much for the feedback.