1. Gretchlings paid to play dead. Will retreat behind a door and lock behind them if things get too rough.

2. Humans and frogs paid to play like bandits with masks. Will ambush over chest.

3. Undead

4. corrupted healing spell... steals from the healthy to give to the damaged...

5. pit trap... if anyone falls for it, there's a tunnel down there...

6. animated gargoyle, programmed... sentient... they have to trick or persuade it to let them through the portcullis...

7. Dirt elemental...
 http://frpworld.com/downloads/...20Hidden%20Vault.pdf

https://archive.org/details/5R...18/page/n21/mode/2up page 22