Sign Up / Log In

The Orange Box

Xbox 360
  • 2,405,113 Achievements Earned
  • 83,656 Players Tracked
  • 99 Total Achievements
  • 14,309 Obtainable EXP
  • 1,000 Gamerscore
  • 1,843 100% Club
Rocket Science

Earn silver medals on all Portal challenges.

20
3.16% Ultra Rare - 830.00 EXP

You have not earned this achievement yet