Would you kindly offer me some tips on BioShock

I completed the game once on Normal (it was still super hard!!) and rescued all the little sisters and got the 'good' ending :)

I'm going to play it again, on Hard, and harvest all the little sisters and get all the the achievements I missed before. I have a few questions for you veteran BioShock players, would you kindly answer these if you got the time.

1)To get research PhD achievement... do I have to fully research ALL the splicers and cameras and stuff over again, even if I already got the achievements from my 1st play thru? I got all the research achievements except Serucity Camera and Rosie. Since I'm playing it from the beginning again, do I have to get all the splicers and stuff over again?

2)How the heck do I get into Sander Cohen's apartment?

3)Any other tips and tricks you can provide to me?

Thanks, much appreciated.

You can NOT kill him in Fort Frolic.

Go to his house in the apartment level, then he will come down stairs, and then, you can get a "power to the people station"

Also, kill him, take a picture. You get an achievement.

I, btw, thought bioshock was hella easy.

To get the Research PhD, you will have to research everything over again unfortunatly :( To get into Sander Cohen's apartment, you have to make sure you dont kill him when he reveals himself after you finish his masterpeice in Fort Frolic (his apartment door will be locked otherwise). As for advice, the Crossbow fully upgraded owns most splicers in 1-2 shots plus you can recollect some of the arrows you shoot into them after they're dead. Good luck!Overlord_Fiend

The research goes really quick if you do it right. Electrobolt anything then take pictures of it until it wont take any more. By bolting it you get extra score and the research goes up faster. I have gained 2 complete levels off of one guy doing it this way. Also, its good to do the research because it makes everything easier to kill or it will hack without you playing "pipe dreams".

ps: I beat it on hard the first time and also thought is was quite easy

were is his apartment located exactly?Gamefreak1296

I thinks the area is named Olympus Heights, on the first floor of the apartment complex.

Sorry, I broke his mind control a while ago.Shade-Blade

I like your GT

Knubbz has got it as far as taking care of Big Daddy's goes. That is what I did and I never got killed by one and rarely got hit. The idea is to keep your distance!

A buddy of mine is a photgrapher. Talk abut creaming his pants. Took him weeks, playing everyday to complete the game. He was obsessed with getting 'good captures' and would replay whole sections just to get a photo of a splicer in a particular pose. What a nut.