October 24, 2011 Patch

{{Patch layout
 * source = http://store.steampowered.com/news/6599/
 * source-title = Portal 2 Update Released


 * before = October 11, 2011 Patch
 * after = N/A


 * notes =

Portal 2

 * Fixed a save/load exploit in challenge mode
 * Fixed error sounds playing during a few animations
 * Additional localization strings

}}