I have seen this post and downloaded the alpha. After downloading OpenAL it worked without any problems, apart from not registering that i plugged in my gamepad, but it worked with that after the restart.
I guess there is not much point giving feedback about potential bugs or problems with the alpha since a lot of that might be fixed already.
Anyways, about the alpha.
I've started playing and it felt incredibly familiar from the get go. I like the block / attack / heavy attack / dash playstyle very much and I think it works very well in this game. Air dash and double jump made it feel a whole lot better once i got that, too.
I like this whole idea so much that some months back I actually made something along the lines on a weekend with a friend, although the setting is clearly different and the enemies don't have melee because we didnt have time for that
I really love the art style and samurai sort of thing. The main character reminded me a bit of Yasuo from League of Legends with the long waving hair, although it's a common theme for many characters. Either way, love it.
Obviously the alpha didn't have a lot of enemy variety, but the samurai guys were super tough for me. I needed several restarts until i killed them, and the way i did it was by dashing in - attack - dashing out. I guess I am not good enough to block / jump his attacks, my reactions for which one to choose were too slow.
Later on i noticed that i don't even have to get in range if i just kill him with heavy attack from just out of his range, so most of these encounters became a lot more boring unfortunately.
The enemies seen in the beta trailer do look super fun though
It's cool that the alpha had so many different background / level themes already (and i've probably only seen half!), and it felt really huge. So huge that a map would have been appreciated from the get go haha
Anyways, yeah just keep it up. Great stuff!
BTW: Why do you not use the content pipeline for textures?
And you should tweet some gifs of your game's progress and add #monogame to it, they will be retweeted by the official monogame account