This are some possible setups for the Survival Skill Tree with the per node efficiency.
A represents number of armor nodes
S represents number of structure nodes
N represents the total number of nodes activated
A/N is how many armor node you get per total nodes activated
S/N is how may structure node you get per total nodes activated
Note that these may not truly be the most efficient possible setups, but are in my opinion, the most practical setups.
Edited by cakasaur, 16 May 2017 - 11:02 PM.