1. Portal Achievements
  2. Basic Science achievement
Portal

Portal

253
15
4.53
Game action
Portal
Chendal

Chendal

253
15
27 Jun 17
13 Feb 18
11h 28m
100%
Chendal

Basic Science achievement in Portal

Basic Science

Earn bronze medals on all Portal challenges.

Basic Science0
13 February 2018Offline Mode - These achievements require play in game modes that do not necessitate a connection to any online services.Single Player - These achievements can be obtained by a single player.Time/Date - These achievements require you to play the game or perform actions at certain times, within a time limit, or on specific dates.
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