Thought experiment: if you had to Iron Man the star chart with a single frame, who would it be?
The following restrictions apply:
Account is totally fresh
Joining a clan for blueprints is allowed
Every node must be done solo
No trading, except for transferring a prime set of the frame of your choice (if a prime exists)
Specters and Skaut are allowed, but please note if your strategy would require them for certain nodes
Helminth abilities are allowed
Off the top of my head, my top picks for this challenge would be Nyx, Limbo, Octavia and Frost since they have good CC and objective defense, and good weapon support; "complete" frames if you will. Loki, Zephyr and Banshee would all also be good picks, although missing elements from their kit here and there.
I think the big limiter here would be excavation maps. Zephyr would be my pick, as long as I can also use some sort of operator mode for spy, but i don't think it's strictly necessary. An un-forma'd Zephyr is steel path capable. ETA: 100% projectile defense for you and the thing you're standing next to is just too good.
Maybe I'm not understanding something- why is excavation a limiter? You can pretty much always struggle through an excavation eventually since you can't fail them unless you die..... right?
You don't get partial credit for an incomplete extractor and the waves don't get easier, and the extractors don't scale very well. On SP I've been in a position with certain frames (Loki even with irradiating disarm) where I couldn't clear a single extractor.
I suppose this is true for defense objectives in general though - that one moon defense node on SP, for example - Stofler. And like the other person mentioned below for mobile defense.
Zephyr has been my main for a long time and would be an easy pick for this. Breeze through mobile defense with turbulence, tornado for everything else except spy. As long as you know the spy routes, operator just makes things even easier.
Personally I'm more anxious about Aten, since the mobile defense consoles are already squishy and aren't scaled for the T4 void multiplier. They can go down in seconds.