Portal features several achievements that challenge players to complete specific tasks, often beyond the scope of simply finishing the game. These range from story-related achievements (e.g., 'Lab Rat' for completing the game) to skill-based challenges (e.g., 'Terminal Velocity' for falling a great distance and surviving) and observational feats (e.g., 'Transmission Received' for finding all radios). Some achievements require specific portal maneuvers, like 'Long Fall' for falling 30,000 feet, which can be done by creating a vertical portal loop. Others encourage exploration, such as finding hidden areas. Reviewing the achievement list can provide additional objectives and extend your playtime, pushing you to master the Portal Gun in new and creative ways.
