Pretty good.
I was a bit surprised when I saw this in the portal; I loved the first one but heard nothing about a sequel coming out. I tried playing it last night, and found the same bug as mentioned below; that double jump is a bitch. After attempting to re-play it, I found an even weirder one. If you click new game but wait at the tutorial screen, your character (or the enemy) seems to start saying things, and then when you do start to play, all enemies that spawn immediately die. I got 21 kills with zero damage.
Anyway, onto the game review. At first, it seemed to be roughly like the original. After a bit of playing around, I noticed that there are a lot more moves you can use, and a much larger space to maneuver around. The extra moves seemed to complicate things a lot, but I guess it just requires some getting used to. Being able to jump with the arrow keys would be a whole lot easier though, maybe the up arrow for jumping and the down arrow for blocking? Apparently D is block as well as attack, which I didn't really get. I'd assume that you're meant to press it right before getting hit, but it would give you more control to have separate attack/defend buttons.
The shop was a good idea. It added a new dimension to the game, and gave me more of a reason to get better ratings. Being able to upgrade your favourite weapons is really good, before you'd find a better sword and your old one became pretty much obsolete (at least I THINK you can do that, I haven't checked myself yet). I liked being able to use items too, those would be handy for the long, difficult boss battles.
The other new features were alright I suppose. All I really got to test out was grappling and stealing your enemy's weapon, which doesn't seem that useful. Maybe I'd do that if I was trying to weaken them, or if they had some kind of special weapon... Generally I'd just stick with my own sword though. Taunting is only good if you're focusing on a high rating, which would be alright for some people (not me though). Perhaps you could make it so that it heals you, and gives you a little magic too? It might already do that, I didn't notice at the time. You could even it out by making the taunt last longer. The barriers were ok, the red one is a bit pointless, but the blue one adds a puzzle aspect, which is kind of nice.
All in all, it was a good game that was spoilt by a few bugs. I think it'd be great if you fix them, but it's not much fun playing a game if it could glitch at any time. If you did test this alone, then the glitches are understandable, but you should look into finding some other people to help in the future. I'm sure a lot of people would be willing to do it, because it's a good game. I'd even be willing to help out, if you wanted.
Oh, and one quick question: Do you have any idea when (if) you'll release the next issue? Just wondering out of curiosity. I'll look forward to playing it, if there's going to be one.
This turned out to be a long review :3 I'll be surprised if many people read it.