All these weapons could be useful on the battlefield.
A seven-barrel volley gun with three different firing modes that could snipe enemies at a distance or smash them in close combat (or smash your arm).
G-31 Arc grenade - perfect bouncing discharging electricity that strikes enemies (or teammates mostly)
PLAS-45 Epoch support weapon, which charges plasma into a focused sphere. Since it doesn't have a safe mode super deadly for helldivers, so be careful!
A/LAS-98 Laser Sentry is a good defence turret, with an extremely big heatsink to prevent an explosion during usage. Still, don't be near when there is an intense fight.
And the most exciting development from scientists - LIFT-182 Warp Pack stratagem! With this Warp Pack, you can create a wormhole and teleport to short distances. It's a perfect tool to be mobile in battle, be able to quickly leave the fight, or the best part of that update - solo loot the bunker! But be aware, teleporting into enemies with extra care, it could kill you, just as teleporting into cliffs or other obstacles could get you stuck.
This new armor brings to the game a brand new passive - Adreno-Defibrillator! After fatal damage (in case you don't lose a limb or head), you get fully replenished and ready to fight! But instead, you will start to lose health till death, so use it wisely.