Fixed bug saving dungeon map

Image in Item wasn't marked as transient, caused dungeon map to fail to
save.

Also added in a print debug statement to show health points as they are
affected.  My character never seems to do damage.

Also: Bug, when wearing any sort of armor, all monsters fail to damage
the player.  At all.  Like, it won't even register attacks against the
player as having occurred (the debug above won't print).