How to beat Bioshock on hardest difficulty and get the survival trophy as well
Stat new game in game+ (gives you all your previous game weapons, plasmids, etc.)
Turn off Vita-Chambers
After lighthouse switch to easy mode.
Build up Adam, ammo and money.
Max out all weapons and plasmids
Switch back to Hard mode when there is a white flash of light when Fontane is bound during last Adam vile.

See vid for strategy on Fontain (pretty easy if done right)
https://www.youtube.com/watch?v=tPfLEXvLS3U
https://www.youtube.com/watch?v=g6ZyLoFY0Cg
Stage one
Trap Bolts
Granade Launcher
Stage Two
Security Bullseye
Granade Launcher
Stage Three
Bee Swarm
Electric Gel