Valkyr completed, it was a little annoying dealing with the small shield, but then I realized I was taking 1 damage to health a hit, so I went deep.
Then I found out the corpus are still assholes even with 1000 armor, so I'm back to playing safe-ish. I still spam 2 from time to time trying to go invisible :s old habits die hard.
Anyways, I'm trying to get Oberon next, only finding the helmet, but I'll get it eventually. In the meantime I'm gonna build Nyx. I remember chaos used to be easymode infested clearing, is that still the case or did they finally nerf it?
You will not ever care about Valkyr's shield when you rank up her ultimate, hysteria. That is 30 seconds of total wreckage.
It gets better. If you maximize her with Power Duration, you can have Hysteria on for one minute and 17 seconds.
You can do that with max rank of these three mods:
http://warframe.wikia.com/wiki/Constitution
http://warframe.wikia.com/wiki/Narrow_Minded
http://warframe.wikia.com/wiki/Continuity
Sucks that they are rare and I have only one of them right now. (Continuity)
Just abuse the knockdown invulnerability heavy weapons have if they're mid swing. Once you get the hang of spotting when it'll happen & hitting E quick enough it becomes a non-issue.