Found a listing for one set I had not seen before, Shredder's Throne Battle.
If I'm not mistaken the following sets have not been found (yet) online or in stores:
Nickelodeon sets
Mikey Kraang Dunk ( DXY05 )
Raph Slapshot ( DXY06 )
Donnie Baseball ( FFC50 )
Leo Touchdown ( FFC51 )
Mikey Stealth Tour Trike ( FFC54 )
Raph Stealth Ski Spyder ( FFC55 )
Shredder's Throne Battle ( FFC57 )
Sewer Battle ( FFC63 )
Shellraiser Showdown ( FFC64 )
Micro Figures (Blind Bags) - Series 5 ( DMX21 )
Micro Figures (Blind Bags) - Series 6 ( DMX21 )
Half-Shell Heroes sets
Donnie Ooze Roadster ( DXV84 )
Dojo Duel ( DXV85 )
Donnie Mouser Ally ( DXV86 )
Turtle Van ( FFJ48 )
These are all listed in
red in the first post.
Did I miss something, or has anyone found any of the above sets?
EDIT: Also found some new packaged images
Updated mini figures checklist: