haven't looked at the map... but top right boss hasn't been my problem, it was bottom left (still at 2 medals, from underdeveloped squad) (Now I suppose my groups will stop hitting the easy top right boss..)
CLosest I got was second team almost wiping the boss(if last survivor had procced instead of normal hit, it would have gotten it), and then slow helper squad diverting north, and only killing last boss

Squads- about 100k, 24k, 28k, 26k, 22k.... running with helpers 32k to 54k.

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Originally Posted by ickss

well, you assume that each way after a node is equiprobable, fact that i personally never read anywhere.

this makes sense to me- I remember one 4 way map that I failed 6 times in a row. at 50% odds, should have beat it 3/8 times (50% chanee for two on one branch to each go different, 25% chance for all three on other branch to choose same path). But I couldn't figure out which branch should get the 3 for better chances, so I assumed rotten luck