I've been following this for a little while and just gave the PC demo a good go.
Overall I enjoyed it. The graphics are very nice and when you land a number of kills in a row it is very satisfying.
Some of the enemies are hard to kill, it took me a little while to get the villager timings right and I'm still struggling to be consistent with the foot soldier. That said I really like the foot jouster because you have to do multiple moves to kill them.
I also found the camera shake to be excessive and jarring. It almost felt like the game paused for a second after every kill. Perhaps you could include a setting for how violent the shake is.
As for game progression, I'm not convinced by the enemy unlock system. Being able to choose enemies is great but having the first few play throughs with just a villager felt repetitive. I'd suggest having new enemies auto unlock whiles running and then allowing the player to choose to keep them or not.
Also I noticed when unlocking new enemies there was a little tutorial box with how to kill them but couldn't find that again. Either I am blind or it would be a great addition to have an info button on each enemy you've unlocked.
Can't wait to hear what is next for the game.