Hell Let Loose: Vietnam keeps the original game's 50v50 battles, squads, command structure, and focus on objectives. It changes the war, the technology behind the game, and the tools each faction uses to move around the map.
It is a standalone game, not an expansion or a direct sequel. Buying Vietnam does not require the original Hell Let Loose, and owning the World War II game does not automatically add Vietnam to your library.
The US and NVA Do Not Use Matching Systems
US Forces use helicopters for troop movement, supplies, fire support, and new forward positions. The North Vietnamese Army uses tunnel networks to move people without placing a loud aircraft in the sky. Both systems can move a team quickly, but opponents detect and counter them in different ways.
After the open beta, the developers increased the tunnel cooldown from two minutes to five, reduced the maximum distance between connected tunnels from 800 meters to 400, and increased several distance and travel limits. Tunnels are also destroyed when the enemy captures the friendly territory containing them.
Helicopters received handling improvements and more resistance to small-arms fire. Officers can use a Field Pad to create a spawn point after leaving a helicopter, giving US squads another way to establish a position after landing.
Boats Make Rivers Part of the Battle
Patrol boats are available to both sides. They turn waterways into routes for transport, supplies, and armed movement rather than leaving rivers as simple barriers. Squads need to watch shorelines and crossings because a boat can move people around a blocked road or defended bridge.
Movement Has More Options
Players can swim, climb, fast-crawl, and drag wounded teammates away from active fire. These actions fit maps with steep ground, dense vegetation, villages, and large river systems. Dragging does not replace the Medic; it helps another player move a casualty into a safer place for treatment.
The Tactical Map Is Now 3D
Vietnam uses a tactical map generated from the game world. It shows elevation, roads, rivers, and terrain in three dimensions, which gives infantry and vehicle crews more information when choosing a route. The developers have also worked on faster opening, clearer landmarks, and better performance since the beta.
Because the map comes from the same world data as the battlefield, later terrain and balance updates can appear without rebuilding a separate flat map. It is still a tactical tool, so players need to use unit markers and voice reports instead of expecting it to reveal every enemy position.
Unreal Engine 5 Supports the New Game
Hell Let Loose: Vietnam was rebuilt around Unreal Engine 5, with much of the existing codebase reworked for new mechanics, visuals, audio, and performance tools. The original Hell Let Loose is not currently planned to receive the same full engine move.
A newer engine does not guarantee perfect performance. The May beta exposed frame-rate and stability problems across different PC hardware, and the release was delayed while Expression Games worked on rendering, animation, graphics settings, resolution scaling, console performance, and audio.
Six Maps Use More Than Jungle
The six launch maps are inspired by real locations and operations, but they are adjusted for 100-player matches. Confirmed environments include Thanh Hóa Bridge and Đắk Tô Airfield, along with river systems, farmland, docks, military positions, settlements, coastal areas, and dense jungle.
There are no night maps at launch. The developers are exploring night combat for later updates, but they want dedicated tools such as flares and floodlights instead of making an existing daytime map darker.
Logistics Start Faster
Engineers can build resource nodes immediately at the start of a match using pre-placed supplies. Teams can still move supplies and choose a less predictable location. Helicopters and boats add more ways to build a logistics route away from headquarters.
What Still Feels Like Hell Let Loose
- Matches remain 50v50 and depend on squads rather than solo play.
- Officers communicate with command and keep players focused on an objective.
- Warfare and Offensive return as major modes.
- Fast deaths, limited information, and long sightlines still reward careful movement.
- There is no single-player campaign.
Players who understand the original will recognize the structure immediately, but the two factions no longer move and deploy in the same way. Helicopters, tunnels, boats, the 3D map, and expanded movement change how squads reach an objective and where an attack may begin.
