Are there any repeatable missions with optional objectives, so I can redo the OC/DC Challenge if I reset challenges?
Are there any repeatable missions with optional objectives, so I can redo the OC/DC Challenge if I reset challenges?
I know that if I have the Holodome, there's at least a repeatable side mission there, once I do all the initial missions, so I can redo the "Little on the Side" challenge...
But, can I not reset if I want to get OC/DC to Level 5?
No there isn't. There is no repeatable missions in Pre-sequel. And the one you talked about above, The Holodome one, isn't really repeating a specific mission, it's playing a mission that has the same objectives.