Merciless Mod 2 V3+ Project revises a former unstable mod and aims to make it a serious contender in the modding community. Classes have weapon selection adjustments such as landmines with defuse chance, special grenades, overall firearm selection rearrangements and much more. This mod has war effects and blood mod build in. Players can pick among Soldiers, Medics, Officers, and Support Classes. Some classes having exclusive weapons.
Here are some images from Merciless Mod 2 V3.3. I turned the HUD off on some of the images to show better visibility of shell shock/effects.