On this forum immediately after release the patch with the goblins was a hot topic on the discussion of these small creatures and battle tactics with them. I think you’ll find if you want.
Briefly. my opinion.
1. Do not fight the goblins in the early stages (you should get a normal shields and perk “shield expert” at least 3-4 in your guys first)
2. In the latest patch realities, shields – obligatory up to the later stages of the game. I have 12 people – 7 is the Front Line with shields.
Shield is a chance and very good to avoid damage. And none of the armor in the game today do not protect you from damage. All weapons more or less inflicts damage HP any armor you would put on.