Talk:Skills/@comment-25857677-20170111130828/@comment-26113680-20170111182057

Well since you have no control over the God Arc Parts you get, I will list the Control Units that you unlock as you progress through the story.

Story 32, 1st mission in Rank 6, Icy Damsel *** Control Unit, Rank 1 Reinforce

Story 51,  near the end of Rank 7, Firelords in a Storm (1st Hannibal mission) *** Control Unit, Rank 3 Automatic Recovery

Story 74, Final mission in Rank 10, True Moon in the Welkin *** Control Unit, Rank 2 HP Devour

Story 92, 1st mission in Rank 13, Speculum Dianae (1st Caligula I think) *** Control Unit, Rank 2 Reinforce +

Story 100, (Which is actually Post Game category meaning you have to beat the final boss) *** Control Units, Rank 3 both, Body Guard and Melee ATK HP Absorb.

You'll also get access to 3 Upgrade Units that grant 2 skills each

Well as you can see, the defensive Control Units are distributed throughout the story as you advance. So you should try to get yourself some of the useful upgrades that can help you keep alive, like the Devour HP Recovery, that adds 10 HP if you perform a devour and since this is GER we are talking about, it is a pretty neat skill not to mention it's not that rare to find a Part with it.