That's just boring. no combos works for a 2D sidescroller, but once you go full 3D you need to spruce it up a bit. Nothing wrong with combos. They add some variety and fun to the chore of dispatching monsters. If you are gonna leave Light/Dark magic, then you need to leave some of their particular moves in (Holy Cross, Ultimate Light, Ultimate Shadow, the flamethrower chain, etc)CV64 suffered from this. First of all, the whip handled awkwardly. Secondly, there just wasn't a whole lot to it for a 3D game. LoI handled it far better. It had fewer combos than LoS does, but it still followed similar conventions. So it added some more flair and diversity to your whip swinging skills. (and made the long samey corridors not as bad)
Remove combos from LoS and you TRULY get a beat-em-up in it's most BORING form. Something like Bloodrayne Betrayal. Remove health from monsters, making them 1-hitters, and then you just remove all challenge from the game. things like Combos and beefy enemies are part of the substance of LoS.