Service Record & Challenges: 61 challenges to earn (weapon mastery, kill types, milestones, tasks, campaign) tracked live, with a clickable in-lobby Service Record panel and a full catalog in the main + multiplayer menus. 18 new WW2 weapons imported (M3 Grease Gun, Welrod, Luger P08, PPK, TT-33, Nambu, Type 100, Arisaka, Thompson 50-round, plus scoped/sniper variants) with new recorded gun audio. Exact-ammo respawn (keep the ammo you were carrying). Engine: larger sound pool (fixes audio dropout on packed maps like the Overlord house mission), lobby mouse cursor, ammo get/set. UI polish throughout.