But, beyond setting, Hell Let Loose: Vietnam brings plenty of significant differences over its WW2-era predecessor. From frontline structure and faction identity, to weapon handling changes and more ways to control the flow of battle, here are fifteen differences between Hell Let Loose: Vietnam and Hell Let Loose. In Hell Let Loose: Vietnam, each side now demands a different tactical mindset. Respawning Becomes Part of the StrategyIn Hell Let Loose: Vietnam, respawning now provides an extra tactical layer. Weapon Sway More PronouncedAiming down your sight for a prolonged period of time now comes with increasingly noticeable weapon sway.