Oh god the nostalgia. Ive completed it now on 360 and PC and its just such a good game. Excellent level design, soundtrack and V.Aing. Its such a good introduction to FPS as a whole because its just so easy to understand and lets new players get accoustemed to FPS-related things like moving a camera, reaction time, firing and aiming
idk if the above makes sense but its how i feel. I think i wouldn't be the type of gamer i am today without Portal 2