Someone asked for tips
about the spiders. So, I'll share how I destroyed them--if you want to learn for yourself, do not read!
The spiders are totally destroyed by the heavy attack. I tried a bunch of stuff, and the friggin' little beasties kept killin' me when I was fighting the spider boss, but finally I found that two heavy hacks and they ran towards me would do them in every time. You don't even have to sheild!
As for you, Mr. Game Developer, I highly enjoyed the way my guy's moves had specific qualities and restrictions--how I could use the heavy straight from sheilding, but not the light, and how I could use the light in the air but not the heavy (Hack at the spidey! Hee.). I also liked how, as I said just above, you could find after some experimentation a set of moves that would totally destroy your enemy. Nicely done.