Stats

Observations about the various routes.

There are 33 different missions.
There are 9 different endings.
There are 21 boss fights spread over the different missions.
This image is the normal diagram of the game's routes.
There are 18 possible routes through the game. (Proof)
The least number of missions required to get all 9 endings is 30. (Proof)
These routes are one of a few sets that allows the playing of all 33 missions while recieving all 9 endings with minimal mission repeating.