This one isn’t as bad as long as you know that many Oedo transfers are a pain due to just how far underground it is. Oedo in Shinjuku should, once you finally make your way up, be near enough signs indicating where Odakyu is.
This one is pretty messy right now as they're redoing the building, but yes with enough RPG skills one should find the way. Conversely, I've been avoiding Shibuya with all the construction, didn't know it also touched the Tsutaya/Starbucks building.