Welcome one, welcome all, to this collaborative testing track! We wanted the best, and they are dissolving in a pool of industrial waste... So I suppose you'll have to do! Right this way please, past those unfriendly looking condemned signs. Good! And remember, your mandatory volunteerism is appreciated!

Spleen's Splendid Collaborative Testing Track is for the discerning cooperative duo. The difficulty is such that it's recommended each team member has gone through the Co-op campaign at some point and have a working knowledge of cooperative portal fundamentals. From there it's all down to cerebral challenges and teamwork. This planned seven part series has two chambers already out to sample. None of the puzzles demand lightning reflexes or any such nonsense. All that you need is a buddy and a thirst for science!

At this point, Aperture Science is legally obligated to provide you with a “Fun Fact” As per mandate of federal fun bylaws and ethical obligations owed in the subsequent disappearance of all those clowns … So “Fun Fact!”

1. The Federal Fun Commission's legal team is astonishingly well fun-ded!
   
   
2. Aperture Science is committed to the wellbeing of you, and your cooperative testing partner!
   
   
3. You are not human. Therefore Aperture Science cannot claim lawful culpability for any and all damages sustained during testing.
   
   
4. Aperture Science promises to never employ underhanded tactics like coercion to motivate test subjects.
   
   
5. Failure to comply will result in your immediate, violent disassembly.
   
   
6. The preceding statement is merely a "harmless goof" to encourage morale.
   
   
7. Aperture Science reserves the right to communicate and hereby enforce its motivational goofs through any means necessary.
   
   
8. Grief counselling, and assorted confectionary treats will be available at the conclusion of the testing.

Well with all that red tape out of the way, looks like we're ready to start. Go get em tiger!