This mod alters many sounds, adds new gore and death effects and adds several new gameplay elements to improve the immersive aspect of RO2 and RS, including new weapons, dynamic movement speed and configurable zoom options.

TeaandCrumpets says

10/10 - Agree (10) Disagree

This mod completely changes the atmosphere of RO2. The original feels like a WW2 paintball fight in comparison to this mod.
It's a tense, brutal and unforgiving battlefield now, so keep your wits about you and your weapon loaded!