Half-Life 2: RESEARCH AND DEVELOPMENT - Full Walkthrough

Research and Development is a puzzle-centric mod for Half-Life 2: Episode Two featuring an unarmed player but plenty of violent mayhem. ★★★ Please SUBSCRIBE, LIKE and SHARE ★★★ Thanks :) Join us on: -------------- Other Half-Life 2 Mods, in 60FPS and NO Commentary ------------------------------------------------------------------ Other Parts of the Half-Life Story: All with NO Commentary ------------------------------------------------------------------ Black Mesa 60FPS Half-Life 2 Cinematic Mod Half-Life 2 Episode 1 Cinematic Mod Half-Life 2 Episode 2 Cinematic Mod ------------------------------------------------------------------ Other Full Length Walkthroughs - All in 1080p and NO Commentary *** Please Rate and SUBSCRIBE! ***