Thanks a bunch for playing it! There will be more to come for sure :D
I'm not sure if they combat mechanics themselves will evolve much passed this point, but I'll have a think about it. There will be a lot of other options related to combat - not only different weapons with different effects, but also various spells/items that you'll be able to use against enemies.
In terms of next steps... well the next immediate step is going to be a whole bunch of refactoring, bug-fixing, and adjusting based on people's feedback :D After that I will probably go back and look at my level generation - now that I have finished this demo level and have a good idea of how I want levels to "feel", I can tweak and fix my level generator functionality based on that. So I guess the next "big" demo will be playing in a "semi" procedurally generated level :)