Tank buster and Unveiler badges?

So, what's the best way to go about grabbing these? It doesn't seem that freaks or nemesis show up as radio missions in PI so no easy resetting there. I can easily run solo at x6-x8 so if I can grab a mission that has those targets I should be able to reset a couple times and grind out the badges.

Anyone know of any nice missions in the high level range that I could grab those enemy groups from? I just don't know the blue side content very well yet. Or am I stuck street sweeping for these? If I need to street sweep where would be best? PI I think is the common venue for hunting fake nems right?

EDIT: Not 100% on street sweep respawns, do I need to kill the whole spawn or can I just pop the nem and move on?

For tank buster, I'd join a Sis Psy TF.

If you want to solo, I'd do a flashback Freakolympics arc with as high a diff multiple as you can handle.

If you have to hunt them, I think the best place is Creys Folly. I seem to recall the SE and NW corners of that map having a lot. There is (or was) a freak farm mission that was in the lvl 45-50 range, if I recall, but I think it's been changed. Even if it hasn't, I don't recall who gave that one out. Unai, maybe.

For hunting Fakes, I hit the shadow shard. One of the floating islands in FBZ has a ton of them. Often I can find spawns with 2 fakes, sometimes even 3. I know there is a good flashback arc for these, too, but don't recall the name of it. I personally just street sweep (island hop?) out in FBZ.

To address the follow-up question: You just pop the nem and move on, no need to kill the whole spawn for badge credit. I agree with Madadh on all points - the Sister psyche TF is likely the best bet for Freakshow Tanks, and the Shard is a great place to hunt for Nems.

Credit is also shared among teams (meaning if someone on a team kills a Nem, for instance, everyone on the team gets 1 kill credit) - this means that if you can organize one, teams make the sweeping for badges go much much faster. Just one other person helping hunt cuts your time in half.

For the Freakshow, I like Terra Volta.

You don't need to clear.

When I'm hunting Fakes in the shard, I just do circuits around a single island. The groups won't reset if you don't disturb them (you'll see the same guys every time you loop around), but if you do so much as aggro a single minion, the next time you get far enough away from the spawn point and come back, it'll be a different group there. If I find that I'm circling the island without seeing any Fakes at all, I'll just toss a [Throwing Knife] into each spawn for one loop to reset the whole island. The same trick works anywhere, as long as your loop is big enough that spawn points will respawn before you get back.

Villain Tip Missions have a lot of PERFECT missions for these.

That is correct - all teammates must be in the same zone or mission to get credit. Any that are out of zone lose out.