The Khora warframe is partnered up with a lethal Kavat companion and uses a living chain to snare and strangle enemies at a decent range.
Whether or not the pet class warframe excites you, there’s a new endless game mode to keep everyone busy. Sanctuary Onslaught is here, giving players a challenging PvE experience in which waves of enemies have to be killed rapidly and efficiently. There are special rules, including no gear, a prerequisite of Rank 30, and a boss that has shifting tolerances toward ultimate abilities.
Source: Patch notes. Thanks Sophiskiai!