The Full Combat Rebalance mod is, so far, the biggest modification created for The Witcher. The combat mechanics have been remade almost from the scratch. The aim was to maximize the realism of the gameplay, this way making it more similar to the world created by Andrzej Sapkowski and maintaining the gameplay to the highest possible standard at the same time. The fights have became more brutal, they need more tactics and strategy, but on the other hand the combat system rules have become more logical. We warmly encourage you to test the modification on your own – and experience a completely new game!

ToxicCosmos says

10/10 - Agree Disagree

Made a relatively easy game more challenging. I highly recommend everyone try this mod at least once on a new game.

If there are certain aspects you don't want to change—for instance: I didn't want the new HUD or the new inherit night vision—then you can just disable those options during install.