

While the Boosters in Helldivers 2 will depend on your build somewhat, the first one you'll want to go after is the Hellpod Space Optimization. This ensures that you come out of the Hellpod with your ammo, grenades, and stems fully stocked. This saves you a Resupply, and applies to respawns as well.
Helldivers 2 Boosters can be equipped before each mission, providing certain advantages to your Helldiver. Some might decrease the time it takes for reinforcement budgets to refresh once they hit zero, while others will make it easier for your Helldiver to move over tricky terrain.