- Activate Switch I to lower the spikes in your path and continue east.
- If you have a Steel Key, you can reach the chest in the lower-left corner of the room by activating Switch II. Remember to deactivate it afterwards to continue on!
- Once you have the Hammer, you can create a shortcut through this room (which will come in handy for reaching the secret boss).
- Copper Fish: Two waves. (must be cleared to progress)
- Drill Bot: Three Copper Fish and two Drill Bots (guards Chest #1)
- Sludge Slime: Two waves. (guards Chest #2)
- Wave #1: Five Sludge Slimes
- Wave #2: Three Sludge Slimes and two Copper Fish
Community content is available under CC-BY-SA unless otherwise noted.