Minor post jam bug patch

Just a quick update to address some bugs I noticed after the jam.

1. Entities shouldn't fail to open doors and chests occasionally

2. You can't activate more runes while targeting a spell to get free turns.

3. Armor ACTUALLY adds hp now instead of only looking like it did.

4. Torches shouldnt spawn on top of enemies anymore.

5. The hardest enemy shouldn't spawn on early floors anymore.