I had to grab my mouse instead of a touchpad to give this a proper try. It took me so many tries, but I did eventually get past the second wave with 2 guys to get an upgrade! Unfortunately the enemies got so much stronger after that, I died quickly xD
Right now it seems like you have either a veery short window to hit enemies while they approach you before they attack, or you need to be against a wall and use your shield to hit between their attacks. Fighting two at a time is super hard because either they flank you or their knockback moves you to somewhere they can.
The aesthetic is great though! The chickens in the arena are funny, and the music is nice. I'd agree with others that the difficulty needs to go down, but you might have to play with the enemies getting your upgrades mechanic to make that happen.