-=How long is the game?=-

Movie length. Expect 1.5 to 2 hours for the first playthrough.

-=How many different endings does it have?=-

Five.

-=Is there a good or canonical ending?=-

No.

-=Can I die in the game?=-

No. There is no game over, you will always get one of the five endings each time you play.

-=What do I gain by playing it again?=-

Besides trying to achieve different endings, the paths to get there can vary a lot. Items you pick up or the order in which you visit the different locations will affect possible paths, as well as your attributes.

-=How many chapters/locations does the game have?=-

There are 10 different locations (or chapters) that you can visit, the order will vary depending on your choices. There is also an Epilogue, so in total there are 11 chapters.

-=Will I be able to visit all locations in one playthrough?=-

No. Some locations are optional, and some are mutually exclusive. That said, some locations are obligatory so you will always see the main part of the story on a playthrough.