Hello. I'd be glad to help, but being as busy as I often am, I don't actually play TDM every other day and I have not played the majority of missions made to date. I have played many, especially from the more early days, but hardly all.
If you are looking for quick but detailed information on each mission, along with all manner of useful links and additional stuff about them, this overview at the wiki should help: http://wiki.thedarkmod.com/index.php?title=Category:Official_FMs
I might need to add some of the very latest FMs that came out since spring this year, but otherwise, it's as complete as it gets. IIRC, all FMs with known walkthroughs have them.
Just let me know if you need advice in anything. Much of this October has been rather hectic and busy for me, but I'm approaching some more pleasant weeks ahead, so I might be able to find more time. I want to work on my own FMs too, so it would be ideal getting back in the TDM saddle, after being a bit burnt out on documenting everything and working on little projects for the game well over half a year ago (when I last worked on these).