MR 28 - Vauban
This is the MR 28 test as Vauban. Anyone who groups enemies could be used to make this test easy. Zephyr, Nidus, Vauban, etc. The cans always spawn in the same places, in the same order. The key is to get to the can in time, and keep an eye on your timer. There is a timer to get the can, a timer before it depopulates from your hand, and a hidden timer for the effect. Try to soak the timer in your hand to get as many as possible in the vortex before throwing, but make sure you throw it in time. Standing with the vortex between other enemies and you helps to get them gathered up faster. Any AoE or Melee weapon should be effective for this test, I just happened to have my Kuva Tonkor equipped on my Vauban. The new Proboscis, Bramma, or even Ogris if modded correctly could be effective. Other weapons such as the Kuva Nukor, Amprex, or Khom could also be effective due to spread and/or punch through. Melee, as always, is a viable option as well.