Brad Gallaway reviews Medieval Resurrection, and doesn't have exactly kind things to say about it:
"In 1998, an underdog action game called MediEvil hit the PlayStation. Although it didn't make much of a splash, its likable undead hero and reasonably solid play led into a sequel and something resembling minor cult status among those keeping an eye on the fringe. Fast-forward seven years and exchange the PlayStation for the PSP. MediEvil Resurrection may have a few tweaks and go a little easier on the eyes, but it's essentially the same game. The main difference? Instead of a small splash, it slips silently into the water and sinks to the bottom."
What exactly does the game do wrong? You can get the specifics
here.