Complex sentence: Depending on whether you beat the game on the PC or the console, with the console ending with Wesley killing The Immortal and the PC ending with the bullet missing The Immortal's head and Wesley pissing in his face.
Split into simpler sentences: Depending on whether you beat the game on the PC or the console version of the game, the ending differs. On the console, it ends with Wesley killing The Immortal while on the PC, it ends with the bullet missing The Immortal's head and Wesley urinating in his face.