(spoilers) question about missions order

You can do any unfinished missions after you finish the meridian level.

Yeah Journey to meridian is the penultimate one. Meridian the way home is the last main story quest. Had to look that one up myself actually when I was playing as I wanted t oat least make suer I finishedall the side stuff I had on the go before I hit those last cvouple of quests. I know there's a lot of stuff that I didn't do in that first playthrough like take down those big architect things. But I tried to avoid taking them on in that first run as I wanted to just get used to the combat and everything in that first playthrough not take on something that would likely kill me in about 30 seconds. But I'm moer used to it now so I might take one on in my next playthrough.