Build Update V_6k7 — Trench Tales Steam update #1280344

- Added a new mission, available from the Mercenary Camp - Added a new uniform set, helmet, and back attachment as mission rewards - Introduced a new enemy class (first iteration) - Reworked knockdown logic — now, each damage type (handgun, shotgun, explosives) can trigger knockdown effects on enemies. Enemy classes have varying resistance to different damage types - Applied some fixes to melee; melee logic will move to the next stage of development to make it more enjoyable - Minor changes and tweaks throughout