I'm f2p too... maybe you just aren't good in survival trial if 8 ninjas is the most you can manage.
I managed to defeat Survival Trial once and few stages of Breakthrough too
Also... TC, you don't have to cultivate everything on everyone right away. Like for example... if you use Zabuza, there's no need to bother with his NIN, or if you're using Karin/Kurenai, there's no need to bother with their ATK, and so on...
I have 13 ninjas at cultivation 38 (which is max for 65), then 32, 31, 24, 23, 22, 20, 17, 16, 14, 9. (some of these are equal, some average levels)
EDIT: I've reached Stage 12 with 12 Ninjas, everyone at full HP, that 22 average jumped to 26 average. So that's 4785 runes for this run so far.
Now I have Breakthrough against lv 67 lght main leader of my group. And 69 Water Main 9th ranked player on our server (by BP), I'm hitting lv 66 tomorrow, so I'm gonna wait....
EDIT 2: Managed to beat that 69 level player, lost 8 ninjas lol, got 5280 runes during this run, so far. Still gonna go for breakthrough once I hit level 67.
This post was last edited by 101***@facebook at 2016-9-1 14:22