Updated Title Publisher
Updated Title Publisher
Updated Title
Published Title Score Editor's Choice Publisher
Published Title Publisher

Professor Portal

After completing co-op, complete Calibration Course online with a friend who hasn’t played before

Trophy/Achievement Icon
Game: Portal 2
Service:
Rarity: 5.70% (Very Rare)
Tags: (None)
No Comments
No Upvotes
User profile pic

Comment submission error:

The comment must be at least 1 character in length.

Quick sign up

Already have an account?

Quick log in

Don’t have an account?