I was in your situation op, and, after a night of hell, when both dts fell out of bed, dtd bit me, dts kneed me in the nose and I put my teeth through my lip, etc, I decided enough was enough.
I put both of them in their cots (which are still in our room) awake, and sat in the middle, and tried to ignore the tantrums. First night wasn't too bad, 2nd night was better, 3rd night nearly broke me.
I found that once they were self settling at bedtime, they were much better during the night, and they both now go down by 6.30, and sleep until 7. They were 16 months when I started, but I really wish I'd done it earlier, for everyone's sake.
I won't pretend it was easy, because it really wasn't, and took probably 6 weeks until I could pop them down, say goodnight, and walk away, but it was worth it.