If you type ‘?’ while on a dungeon screen, you’ll get the controls list. There’s also a “keys.config” file in the game directory where you can change the keys to whatever you like. It’s just a text file, so you can open it with Notepad or another text editor.
One thing I know that isn’t obvious from reading the key list is that you can attack a hostile monster by walking into it.
Adding an in-game key setting configuration is on the to-do list. Thanks for giving the game a go!