Remnant VI, expedited reapirs.

It does help with it's survival but I've found with dumping everything into health the Remnant VI still just doesn't last that long. Bronze and Silver it's great, Gold it's okay. Platinum... well for me it's pretty useless as it can be shot dead within seconds.

Remnant VI, imho, just isn't that great and proves to be more of a hassle than an asset. The number of times when a teammates VI just strolled into my line of fire and started blocking shots is too high to count. What makes it even worse is that your own VI will do that to you too, while sitting there useless as you tell it to attack something and it just doesn't move.

On Platinum, the VI is key to keeping the salarian architect alive (VI splits the aggro). He doesn't "expedite" his repairs fast enough. Hence, go with recharge speed. 4B for recharge speed, close combat module for the ginourmous health increase, and detonation.

If they've ganged up on you, command him to attack "weaker" enemies from the crowd near you. If you do not command him, he will take on the heavy weights or leave your line of sight. When he leaves your line of sight, both of you die (cos, he won't be there to split the aggro). Command VI to attack "weaker" enemy ---> prime with disruptor ---> focus on something else ---> VI will detonate and finish him off. When the gang has thinned down, command him to take on the heavy weights. Hopefully, you will be shooting the heavy weight by then, splitting the aggro so he doesn't get killed.

Keeping him alive is a skill that will get better over time. Watch how he interacts with the AI and how they beat him up. WATCH and LEARN.

Weaker = Anointeds, Saboteurs, Observers, etc
Heavy Weights = Beserkers, Blaze Hydras, etc