== P. ENDGAME [c03s16] ========================================================

The game should save automatically as you get out of the elevator at the top.
You can't save in this area, and there is also no Vita-Chamber. If you die, the
game will automatically quit to the main menu, and you'll have to start over.
You'll see Fontaine ahead of you, strapped into... something. Time to go to
work.

First, a little bit about the fight - basically we need to drain the ADAM from
Fontaine using the needle the little sister gave you. The only time you can do
this is when Fontaine is vulnerable, sitting in the machine at the center of
the room. Once you drain him the first time, he'll jump out and attack you. To
get him to go back to the machine, you have to reduce his health nearly to
zero, and he'll run back to repair, letting you drain him again. You'll have to
do this three more times in order to defeat Fontaine.

There are three stages to the fight. In each stage Fontaine has a different
elemental power - first fire, then ice, then electricity. The key is to attack
him with elemental damage damage that's opposite to what he's using in this
phase - ice or electricity in the first phase, fire or electricity in the
second, and fire or ice in the third. Your chemical launcher and plasmids, as
well as all your other elemental ammo, is your best friend here. Explosives
are also extremely effective on him, especially in the final phase.

The key to this fight is speed. There will be splicers and security bots
spawning in the second and third phases - ignore them for as long as Fontaine
is not in the machine. When he goes back to repair, you can use the bot
shutdown panel on the north wall (and the medical station behind it), but
ignore the splicers if you can. You don't have very much time to jab him once
he's in the chair. If you don't hurry, he'll hop out again with full health and
you'll have to do that phase over again.

After you drain him for the fourth time the fight will end. There's two
possible endings to the game, depending on how you treated the little sisters
throughout the game. I won't spoil them for you, but try to check them both out
if you can. You will also earn the "Defeated Atlas" achievement for 100 GP.

So that's it, the end of the road. It's been quite a ride, I hope you enjoyed
it as much as I did.