Ooh, nice.
So, for those who haven't done the challenges, my reccomendations- keep Forgy in stage 1 til you get at least 70 orbs- this is easier than it sounds, you can get to full tension in a single square groundslam, then rack up 20 orbs with some chainsaw. I got about 133 total. I could have done it on Paladin again, but the extra fudge room afforded by squire was very nice.
For the 16 skeletons- Aerial Guantlets slams, especially Triangle slams, are the key, as is balancing healing and collecting more magic.
Stay near the back, the skeletons can sometimes hit you in midair, and if you're too close to the lava when they do, they can kill you instantly by knocking you in. This happened to me several times.
Oh, and Forgy's AI is dramatically different between difficulties. Slower attack cycling, less well selected attacks, etc.
And CV:LOS2 or whatever would be good news.