# Portal achievement guides

> How to unlock achievements and trophies, including the missable ones. Player-made Portal guides on QnA.GG.

The page: https://qna.gg/games/portal/achievements. Every guide as JSON: https://qna.gg/api/guides?q=achievement&game=Portal.

## Guides, most read first

- [Portal: Walkthrough & Tips](https://qna.gg/g/portal-walkthrough-tips-ac7868d8.md), by Qloud: A complete guide to Valve's 2007 puzzle classic: how portals and momentum work, a chamber-by-chamber outline, the GLaDOS fight, every achievement, and getting it running well today. Researched September 2026 — current…