-Estimated achievement difficulty: 3/10
-Offline: 12 (200)
-Online: 0 (0)
-Approximate amount of time to 200 : 3-10 hours (Depending on skill)
-Minimum number of playthroughs needed: 1
-Number of missable achievements: "Out of the Blue" and "Is Anyone There?"
-Glitched achievements: None!
-Do cheat codes disable achievements?: No cheats
The achievements in Portal: Still Alive are not that challenging. If you played the original Portal in Valve's The Orange Box, you will ace this game very quickly. If this is your first time playing Portal, have no fear. This version of Portal has very simplistic achievements that require little to no effort.
Step #1: Play through the game
As you play through Portal: Still Alive, you can nail the first 9 achievements in one go. First off, when you gain control of portals, start saving often. You will need to only enter the orange portal throughout the entire game for the "Out of the Blue" achievement. If you accidentally enter a blue portal, reload your last save. Just stay alert and make sure to always pay attention to ensure that you only enter an orange portal. It's easy to mess up, so be careful.
When you start seeing turrets, be sure to save often. If you can make it to the end of the game without getting shot by a turret, you will get the "Is Anyone There?" achievement. Use the environment to avoid coming in contact with turrets.
The other 7 achievements in Portal: Still Alive are easily earned by following the well-written achievement guide below this road map.
Step #2: The Advanced Chambers
The final three achievements are awarded by completion of the all 20 advanced chamber maps. To ensure quick success, follow the video walkthroughs posted in the guide.
[x360a would like to thank Axe Argonian for this Road Map]