Dram castle

Please tell me how to get into Deam Castle.
I have the pirates cloak, the pirate dagger, tinder and gunpowder, but i can not get through the hole. There still is someone invisable who attacks me. I can nor see or kill him!

You've got two monsters there. The Pirate won't be aggressive until you talk to him so take the plant monster out first. Then make sure you're strong enough to deal with the pirate.