First, I need to figure out how to get the cage door open again. Figure out where the door starts, find out how to pop it open for a good while, then work with that.
Second, I need to figure out how to fight off a possession. I hear it's near impossible to do, but if I can get Ruby around to let me practice with her on a daily basis, maybe I can figure out how to turn things around to my advantage. Not every hunter out there has the opportunity to explore things like that with a demon. Actually, no other hunter does? I think it's worth experimenting around with, then possibly putting into action if I can manage to throw her off and grab the steering while for myself in regards to attempting to take Lucifer down.
If I say yes to him, I can force him through whatever door I find to the cage and lock him back in there. Ruby's not a fan of the idea because she thinks it'll either backfire in my face or I'll end up screwing myself over for all of eternity if I do manage to successfully trap him away.
I can live with the latter. The former is what I was trying to get Ruby to help me with. If I can figure out how to do what I need to do, Lucifer won't be able to win. I hope.