I use about 15 to 20 min to get to the primary objective and then I fail in less than 3 min.
I have tryed this build- failed by around 5-10 sec. on a perfect run or else Voidrig dies and there is no time left to get him back.(45 sec)
Voidrig -> Vitality - Steel fiber - Refuel- Stretch -Continuity- Redirection-Slipstream - Flow - Trusters - Efficiency - Intensify.- I do not have the Repair mod.
Mausolon -> Electrified barrel - Venomous clip - Hollowed bullets - Parallax scope - Contamination casing- Charged bullets- Dual rounds- Primed Rubedo Lined Barrel.
Btw i really hate timed (objectives) - So i hope this is not a new Warframe trix to try making things difficult(annoying) like stagger and knockdown.