Just the roof and paint to do. I followed the instructions, but getting the seats in past the delicate etches was a nightmare. The actual fit accuracy of the parts is good and I think I would have been better of getting one side and both ends on, tacking the seats in place and then fitting the other side - a lot less hastle.
The bogies should have gone on last, but I like to get a running unit up first. This could have proved problematic as far as fitting the footboards, which are a folded Z shaped etch. However they slid behind without issue and were fixed with the Wilco superglue.