I've got a few more weekly challenges done. Terrible times for various reason but I cleverly thwarted Prestacious' sinister plans to make me use all of my consumeables by playing cautiously and getting them 1st or second go 
week 3: 56:45 - dafyddr (235,387 pts)
Hack, devices, pizza. I'm terrible with squishy classes (don't react quickly enough) so I'm happy to just get it done. Although thanks to a bad cold I now sound exactly like Thane.
Week 4 54:44 - dafyddr (236,123 pts)
Devices, escort, escort. They were all terrible! Every device was more or less in the middle, and my escorts were both through the middle with spawns right on top of them! And my Typhoon is only at III. First try I went AP ammo; second was warp which seemed to speed my TTK for Banshees. May re-do this sometime after watching how it *should* be done by some of you guys.
Week 5 46:35 - dafyddr (268, 379 pts)
Hack, Hack, escort. Of *course* I get hacks when I'm using a non-dodge character... Got it first time (relatively low level of typical Geth BS, although I did get several of the mandatory pyro spawns right behind me!). I used incendiary ammo, but if I re-do I'll probably go disruptor. How people got this done in 20 min is beyond me though - carnifex just doesn't put out enough deeps! Although obviously TSent rocks.
Anyway Mordus is coming up, so I might take the time to plan/study for that one 