No.
I was about to add a "Dungeon System" together with some kind of simple battle system, but it won't happen as HHG is designed to be another kind of game.
I've programmed those stuff for countless of hours but decided to remove it. (You can check videos/gifs about those system on previous Patreon posts.)
If I, one day, make a game with combat, it'll have combat planned from the start.
But, worry not, I'm trying to add lots of things to do in HHG!