Frustrated by playing Turian Soldier. Pls halp

So, my first kit to 20 was the salarian infiltrator with a lowly widow I. Started doing gold somewhat conservatively at around 15. Other than the widow taking half an hour to reload it was fine. Cloak as escape and damage buff and stickies for those times when you are bum rushed by a pair of berserkers and a hound pack. It worked fine despite the crummy weapon.

Second kit was asari duelist using an equalizer. She is the girl with all the gifts. Very lag resillient, zipping all over the map, refreshing shields at leisure and invulnerability frames. Started doing gold at 10 and and had very good extraction rate with her. 10/10 would bang again.

Now, third kit was the turian soldier. With an OP vanquisher no less! And the experience was quite frustrating tbh. Sure thing, when I got myself positioned in a good sniping range the turbo charged vanq does a TON of damage, but as soon as I start getting under pressure (and this will happen, in particular if you are playing with multiple inflitrators/stealth grid kits) I felt really helpless. Staying in cover gets you killed, and running gets you killed for sure. Again started gold at 10, but extraction rates was lower, I could not really clutch waves like I did with the asari and despite the OP weapon I often found myself doing less that spectacularly in the games.

So, any build/loadout help to make the TSol more durable (on gold that is)?