alpha labs replacement door

so I got the door code for alpha labs [this is after the hell stuff ] and went in and got rid of demons, etc., and now there are only two floors and now what? Unless I missed something, some other way to some other floor? Anyway, there is nothing I can see that can be done, but there must be something.....

OMG LOL [no "embarrassed" smilie?] I need a rest--kept going back to the same elevator, missing the next one....gonna quit this and go have dinner and do something else for a while.