With rank 6 for dmg it will one shot husks if you shot it while cloaked, I used to have speed and vision but switched over to dmg on rank 6 instead.
Actually I skip rank 6 on proxy mines and go with 4 ranks of shields, he's just so squishy even with a cyclonic IV, I always take radius on rank 4 and dmg taken on 5. For a sniper build I have 3 ranks in shields only, but haven't really tried any serious sniper solo with him, I usually have 5 ranks in cloak since I use other guns like ARs and SGs.
With Banshees you want to stop them as soon as you can, Cerberus wave 4 can be a pain if the Banshee starts to push you around since there is a risk you will run into turrets everywhere. Wave 5 is a missile wave, double banshees and Phantrolls. Sometimes the Banshees will come at you first, try to stop them as quick as possible and then nuke when more units are around (preferably the Phantrolls). When you start to be chased by them you will start to lose a lot of time and risk running into Phantrolls, their hand lasers will drop you so quickly if there is no cover available.
Why 5 ranks ?
i use 4 or 6 on all infiltrators, unless i build specific for melee
4 for shotgun/ar/smg/pistol
6 for sniper
5 is just wasted points or a incomplete build imo, unless specificly build for melee.














