personally, i just finished my second and plan to do zealot on a new game +. still apprehensive about doing a hardcore playthrough though, that shit seems crazy.

On my first, taking it real slow, the game is freaky

I just beat it last night on normal so I only started Survivalist today.

could i get some help?  

I am playing two at once so third?

I am currently playing through Extraction before I go on for the second play through and so far Extraction is actually pretty good. 
 
@CoheedFavorHouse:  
 

I'm on my second playthrough. Zealot is super easy, and almost done. Like the first game playing through on impossible you can practically run through it (though I don't 'cause I like the atmosphere). Can't wait to do the Hardcore mode.

I just finished my 2nd playthrough, so I guess the 3rd then

Just started my fifth, this is the best single player experience I have had in a very long time.

i just started my 3rd today, zealot. i plan to keep going 'till i have platinum. saving hard core for last. :S

Almost done with my second then it's on to zealot and then hardcore.  And I also only need 4 more trophies, I need to decompress 5 more necromorphs, upgrade 2 more weapons, beat it on zealot and beat it on hardcore.

I just finished it twice already. one was normal (very first time. you know. try to find out how this game will seem like). then I beat it again last night on zealot level. but last night was crazy as hell. I was out of ammo, had no more med packs left, lower health. that's why I died 6 times in final battle. after government sector, suddenly the game has been changed situation. necros are more aggressive, stronger, double number.... so going to red marker is not easy on zealot level. ubermorph.... I hate this shit again. regenerate.... I can't fuck that shit up. from now on, I need to take a rest. I don't know when I will begin third one. maybe a month later? this game makes me tired. I don't care whether I will go on hardcore or not. zealot seems already enough to be tough. 

Currently on my second playthrough on Hardcore (first playthrough was on Zealot) and am currently at Chapter 7 (my second save).
 
@Edwardryu said:

I don't care whether I will go on hardcore or not. zealot seems already enough to be tough.  "

I'm on my second playing on the hardest difficulty. (Not hardcore)

Finished my first playthrough on Normal last night. Spent today going back in Save Game files and getting achievements I may have missed. Starting a Veteran playthrough tomorrow or the next day.

Still on my first, at the end boss right now and I can not beat it since its such an asshole of a bitch of a fight.  God I hate it when games do this. 
 
Overall though still an amazing game, assuming I ever beat the boss I look forward to playthrough 2.

I am still on my first play through. I am about in chapter 4 right now.

"Just started my fifth, "

Played through 3 times, going to take a break before attempting Hardcore.

First.  
 
I am slow. 

3rd.  Did normal then achievement cleanup on casual.  Now a zealot new game+.

Started a NG+ on Zealot, my 3rd will probably be an attempt at hardcore, I don't think I'll be able to do it though I cant play through 7 chapters in one sitting.

" @spazmaster666: I thought hardcore mode was tougher than all the others in terms of enemy health and damage. I'll give it a go later, my time is running out with Dead Space 2 unfortunately. "

On my first. Just started Chapter 7.