Portal 2 is a first-person perspective puzzle game, it has since been hailed as one of the greatest video games of all time. The Player takes the role of Chell in the single-player campaign, as one of two robots in the cooperative campaign, or as a simplistic humanoid icon in community-developed puzzles.
The goal of both campaigns is to explore the Aperture Science Laboratory: a complicated, malleable mechanized maze. The player must solve puzzles using the portal gun or Aperture Science Handheld Portal Device, which can create two portals connecting two distant surfaces depicted as matte white, continuous, and flat. Characters can use these portals to move between rooms or to fling objects or themselves across a distance.
The game features 9 chapters and several achievements. If you were stuck in the game please review the video walkthrough for all the chapters and levels of the game.