can't choose Dreadnought Omega

[Zavediess]

I just finished the alpha and beta one, but still can't select the omega one. Do I miss something?

[Chauve-souris]

Try defeating some other bosses and their variants.

[Zavediess]

Originally posted by Chauve-souris:

Try defeating some other bosses and their variants.

I thought this is the problem, but the quest is already cleared and I already got Siegfried right arm. I try to join others room with Dreadnought Omega but still I can't get in.

[Chauve-souris]

This is what I found on reddit:

u/arca404 nailed it. Make sure you have completed all other boss missions.

IIRC, you have to beat each Omega boss to allow the next one to be unlocked; so you'll have to beat Gunfort Omega (who honestly is probably the hardest Omega boss) to get Nightmare, Nightmare to get Bolt, and Bolt to get Dreadnought.

Dreadnought Omega is rather a joke TBHWY. Easier to beat than the original, maybe.

And another post goes in the same direction.