Going from a mature 2D system to a nascent 3D platform proved to be a rough transition. There are some good ideas here (the new free range weapon is awesome), with some cool animations, but the gameplay is kind of a mess.
Part of the problem is that the graphics lack the clear distinct lines of the 16-bit era. Here everything looks so muddy. When you die often you don't even know what happened.
I may revisit my current "B" review, which may have been a bit generous.