8 docs tagged with "portal-2"

All 51 Portal 2 Steam achievements with unlock conditions, chapter locations, the Talent Show DLC bug, and Professor Portal workarounds.

Everything you need before your first test chamber in Portal 2. New puzzle elements, Wheatley, GLaDOS, gels, co-op mode, and tips for a blind playthrough.

Full walkthrough for all nine Portal 2 chapters. Puzzle solutions, boss strategy, gel mechanics, and the story beats from start to finish.

Portal 2 cooperative campaign guide. The Calibration Course and all five numbered courses, four-portal strategies, the Hub, gestures, and Art Therapy.

Portal 2 mechanics reference. Gel physics, lasers, Hard Light Bridges, Excursion Funnels, Faith Plates, cube types, and advanced movement.

Portal 2 lore explained. The Cave Johnson timeline, Caroline and GLaDOS, Wheatley, Old Aperture, the moon portal, and Half-Life connections.

Portal 2 tips covering crouch-jump clearance, sv_cheats tracking, gel identity, funnel shortcuts, co-op gesture unlocks, and the Professor Portal partner rules.

Fix Portal 2 crashes on Linux and Steam Deck, the No Steam logon co-op error, corrupted saves, and controller glyph bugs, plus macOS and Switch support.