Wait a moment, Dog is dead!and the animatronics told what he did
So, the boss in the comic is Dog? the first memory we seen is on the Bed? and the last voice we hear is Hannah?Almost everyone in that dream (coma) are multiple personalities of him.
Then, will there be a second part? that was a really great game but, I think the ending leaves many doubts, and if someone read the comic there is still more to explain
so, I found a bug in the first stage of the game, if you just use dodge in the corner of the door of heavy containment, you can walk out the map