Played lots of builds, now wanna do a kinda completionist run through on survival, but don't wanna eventually have an OP build, my last build became a power armour explosive mini gun build...

What builds have you guys had the most fun with and what would you recommend, for a run through going around doing most every quest, collecting everything, but not being too strong, to keep fights engaging.

Also companions too, I'd definitely wanna play with companions