Well I just finished the game. On hard difficulty I was only able to get past certain areas by dying repeatedly and slowly whittling down a bosses health. I’ve experimented with the different vigors but after I got “return to sender” I didn’t use anything else–it’s just so much more useful than the others.
Also, deciding which weapons to upgrade was a bit of a wash, as I could never consistently keep any particular weapon around for very long. Invariably I would run out of ammo and be forced to pick up whatever was laying around.
The ending left me a tad confused (massive spoilers):
[spoiler]As I understand it, Dewitt was a soldier who was present at Wounded Knee massacre and his tormented by his actions. He later has a child, Anne, and this is where the timeline starts to split. In an alternative universe, his child dies, and he later accepts a baptism by a preacher, becoming Comstock in the process. He hires the physicist twins who discover the secrets to levitating objects and opening dimensional rifts. He uses the technology the build the floating city of Columbia and attracts lots of followers. He grows increasingly radical with his beliefs (such as racial superiority and viewing everyone else as “inferior”) and begins to push for an apocalyptic agenda where the city declares war on the rest of the world and reigns down destruction from above with its superior technology.
However, constant exposure from the dimensional rifts has made him sterile, and he needs an heir to complete his vision. So he sends the male twin to another universe where he offers that DeWitt (which you play as the main protagonist in the game) a chance to “wipe away his (gambling) debts” in exchange for his daughter, Anne. He at first agrees, but changes his mind and pursues him. You and Comstock struggle for control of your daughter as the rift closes, and she loses her pinky in the process. At some point the twins become some kind of interdimensional beings, as does Anne, whom Comstock renames Elizabeth and raises as his own. She grows up as a lab rat inside a giant statue which was designed to slowly drain away her powers, so she can only “tear open” existing rifts rather than create new ones. All the while she’s guarded by a giant mechanical bird that acts as her jailer.
Meanwhile, DeWitt (the one you play in the game) carves an “AD” into the back of his hand as a reminder of what he lost (his daughter, Anne Dewitt). He later crosses through a portal (created by the twins? This part confuses me) where you arrive in Columbia sometime later after Elizabeth has grown up. Your memories end up jumbled in the process, and you begin to believe that your daughter had died, instead of being stolen. You play through the game, kill Comstock, destroy the statue, and Elizabeth regains her full powers. She then tells you that you didn’t REALLY kill Comstock: they both exist across countless parallel worlds, and in every one her counterpart suffers because of him. The only way to stop them all, is to go back to the “beginning,” the moment where DeWitt was baptized, where Elizabeth and a few of her counterparts drown you, preventing Comstock and the events unfolding in the game to ever come into existence.
What I don’t get though is, where did Songbird come from? And how did Elizabeth gain her powers? And what where they doing with the “power” they were siphoning from Elizabeth?[/spoiler]