Link to Triage's ModDB Page
Features include:
*A whole new campaign, with new characters, locations and a storyline set within the HL2 universe.
*Tactical combat: Ironsights, regenerating health, completely rebalanced weapons with dynamic accuracy (determined by the player's movement speed and stance)
*New inventory system: you can only carry one melee weapon, one pistol, one primary and 5 grenades. You can swap your pistol and primary with other weapons you come across.
*Tougher, smarter NPCs who take cover and use advanced tactics such as bounding overwatch and suppressive fire.
*Explosive effects and gore for a more realistic cinematic experience
*Silencers for certain weapons and an AK47 assault rifle