Masterful tactics 101, part 1 (since I'm too lazy to do it all at once).
Squad speeds might need minor tweaking, but positioning is - in theory - flawless. Rest is RNG.


11-1
Top is tricky, bot is pure RNG hell of death and destruction.
One squad top, one squad middle left, then one more at either of those. Speed ~500. Tricky part - make sure second squad that reaches the arrow node is weaker - just a single girl is fine. Her only job is to switch arrow node. Let her clear nests and die on pest 9 or boss 10. Just like sex - you don't want to finish too fast. ( ͡° ͜ʖ ͡°) Fun fact - teams go in order. First squad goes first, then second, third, fourth, with helper last.
For the rest - one squad middle right one bottom, or just two bottom, either works. Make them slightly faster than top ones - ~400 if starting middle, ~600 or more if bottom.
Offer a worthy sacrifice to RNGesus and hope for the best. You need perfect RNG on every single node. The chance of that happening is ~7,5%, if my math is right. Have fun.

12-2
Easier one. Kind of.
One or two EXTREMELY fast and strong squad(s) top, 700 speed minimum. One squad on each remaining camp, slow - 400 speed at most. Bottom camp can be a little bit faster than the middle two. Not nearly as much RNG needed as in 11-1, but make a sacrifice anyway, just to be sure.


But remember - that's just theorizing. A Game Theorizing.