Hello, I can make the concept hack n' slash game you describe.
I've played many hack n' slash games and I know how to make a game like these ones. I could make the art, music and everything necessary to make the game, or I could also look for free for commercial use assets. I think based on your requirements the concept game could be done in 14 days, but it depends on more information we should discuss. Any idea you have, we (You and I) will find the best way to implement it.
I have 5 years of experience using game engines like Unity3D, Unreal Engine, Godot and BuildBox for game development so it shouldn't be hard to be done in any of these. One of the many advantages of these game engines is that you can export the game to many platforms like web, desktop or mobile.
I have a lot of experience in game development and I'll do my best to make sure you're satisfied with the results and also I'll be there if you need help at any moment after the development.