I've been reading about this technique but I can't figure out how it works.
I have one simple question: is it feasible to use non-square collision bases?
Anyhoo, I updated the cap with a soft shadow (blurs and fades the higher you go up, looks nice) and tweaked controls to go with modern times XD (up is up, diagonal is diagonal).
Done in .9994http://octavoarte.cl/iso2_alt.cap
Some countries may not download from this host. Sorry bout that, can't fix it myself. Overzealous protection from spambots in those blocks is responsible.