There are 7 endings S.T.A.L.K.E.R. - 7 One is the rich ending (big note to trainer users - don't ! get 9999999 RUs) and other two I've found are a. you join C-C, you get intubated and b. you refuse to join them, you have to beat another level of running across Chernobyl roof-tops through portals to end up in a grassy field stating "Yes, I made it!"
Endings what i have gathered and seen. (the final words he says are the given titles to the varients)
"I want to be rich" - dies from roof crashing in, sure most of use using money cheats have had this because it is triggered from having over 50,000 ru supposibly.
"I want the zone to disapear" - wakes up in grassy field, and has white pupils....supposibly the zone still exsists but he is blind to it....(thats the theory of the video)
"I want to rule the world" - wish granter sucks the sole out of you, you die of course (kinda turning out that wish granter is not that nice a thing)
"I want to be immortal" - well ya do and ya dont, what happens is like in the first matrix film, a liquid metallic solution covers your entire body and ur allmost set/frozen
"Humanity is corrupt, mankind must be controlled" - This ending is weird because you dont see him die it just zoomz out and fades to black, but when he says it he starts having very trumatic visions.
C-Consciousness ending - he lies back in some sort of lab tube thingy ~(sorry for discription) and appears to begin to relive a memory. this memory is of an old man in a field with a dog (sure weve all seen breif flashbacks of this in the game) The man turns to the dog and says "hmm havent seen Strelok in a long time. Is he dead allready? allthought hes hard (hardly/heartly??) as a cat he should be allright. o well (turns to dog) lets leave this place, lets have some dinner, i know that you are more interested in that then our old friend"( walks off into distance). This is supposibly one of 2 "true" endings, the second being....
"I Made It" - He begins by shooting some large transparent containers filled with a bright green solution(deffinatly some sort of radiation) then during the shooting it cuts to black, then a sky fades in. the clouded sky begins to clear and you can see alot of blue, the stalker dude is standing in a lush field, appera to be the zone but somehow recovered. he sits on the grass looking up at the sun then lies down looking up (begins narration)...."I don't know weather i was right or wrong. (puts arm over eyes) "I guess i'll never know. But i made it. And i guess i should be thankful for that". he then lays on his side and it zooms out.
Not alot of questions answered in ANY of these endings but that adds to the games mistry i spose.