The StA-11 Submachine Gun (SMG) is one of the more unique additions to Helldivers 2, introduced as part of the Helldivers x Killzone crossover event. Unlike many other primary weapons, it was given away for free, which meant every active player had the chance to try it. With its extremely fast fire rate, decent stability, and lightweight armor penetration, the StA-11 finds itself in an interesting spot between raw firepower and ease of control.

The StA-11 comes chambered in 9x20mm SMJ, which translates to modest per-shot impact but extremely high output when you factor in the rate of fire. Its magazine is also slightly above average, letting you sustain fire longer than most other SMGs.
If you're the kind of player who enjoys shredding through hordes at close range while keeping good control of your weapon, the StA-11 is an excellent choice. Just remember to balance its limitations with solid squad support or a strong secondary for armored threats. And if you're planning on gearing up further, make sure to look for ways to Buy helldivers 2 super credits cheap so you can unlock more tools to complement this SMG.
The StA-11 works best in urban or tunnel-heavy missions where close-quarters engagements are common. It can clear swarms with speed, but you'll need to pair it with a strong anti-armor secondary or rely on squadmates for dealing with tougher enemies. Its fast reload and high stability make it forgiving for newer players, while veterans will appreciate its role as a dedicated horde-clearer.
A good comparison is the MP-98 Knight—while the Knight has raw speed and aggression, the StA-11 trades some fire rate for more control and slightly longer engagements without constant muzzle climb.
The StA-11 SMG may not replace your heavy hitters or utility rifles, but it fills a valuable niche. If you want a reliable close-range bullet hose that doesn't punish you with recoil, this weapon is worth considering. Its free distribution also means every player has access to it, making it an easy pick to test and experiment with in different mission setups.