Hell Let Loose: Vietnam takes the brutal, team-driven framework of its World War II-era predecessor and extracts it into one of history’s most unconventional conflicts. Whether you’re a returning veteran or a curious newcomer, here are 16 key things you should know before buying Hell Let Loose: Vietnam. A Standalone ExperienceAn all-new experience, Hell Let Loose: Vietnam is not an expansion nor DLC. A “Sensitive” and Authentic Vietnam War SettingHell Let Loose: Vietnam is aiming for a respectful yet authentic depiction of the conflict. Refined MovementMovement in Hell Let Loose: Vietnam has been significantly refined, expanded to encompass new mechanics like swimming, climbing, and fast crawling.