Right, let me see if I can figure this one out:
1. Tuanul Village
-Poe, BB-8, Lor San Tekka
2. Exploring Jakku
-Rey, BB-8
3. Escape from the Finalizer
-Finn (Stormtrooper), Poe
4. Escape from Jakku
-Rey, Fin, BB-8
5. Han's freighter
-Rey, Finn, BB-8, Han, Chewie
6. Arrival on Takodana (more exploration & puzzle than battle)
-Han, Chewie, Rey, Finn, BB-8
7. Battle of Takodana
-Han, Chewie, Rey, Finn, Finn (Lightsaber), BB-8
8. Prepping at Resistance Base (build puzzles involving constructing the X-Wings)
-Han, Leia, Finn, Poe (X-Wing Pilot), C-3PO
9. Escape from Starkiller Base
-Rey, Stormtrooper (mind controlled)
10. Infiltrating Starkiller Base
-Han, Finn, Chewie
11. Assault on Starkiller Base
-X-Wing (Poe), X-Wing (Blue Squadron)
12. Kylo Ren Duel
-Rey, Rey
, Finn (Lightsaber), Finn
Hm, still comes up a bit short.