Tenet Plinx - If you have any sort of ability on your warframe that can group enemies, this is worth trying out due to it's ability to quickly inflict massive AOE damage in a localized area. Has a painfully slow recharge so you need to use this strategically. Tenet Diplos/Kuva Twin...
Boltoris a short-range full-auto carbine that shoots bolts which ignore armour, thus delivering the full payload of their damage capability. It can operate at medium ranges but becomes a little inaccurate. The bolts often require lead-on in order to hit their target due to their, comparatively...