Test Chamber 18

Least Portals (5)

http://www.youtube.com/watch?v=IVgnW_XSNMI

Least Steps (64)

http://www.youtube.com/watch?v=EgvsyZ33AJQ

Least Time (0:39)

http://www.youtube.com/watch?v=lasDxr7RsO4

Test Chamber 17

Least Portals (2)

http://www.youtube.com/watch?v=Ixj0gXRheAY

Least Steps (150)

http://www.youtube.com/watch?v=Tou_Uycv-8g

Least Time (0:55)

http://www.youtube.com/watch?v=IVgnW_XSNMI

Test Chamber 16

Least Portals (2)
http://www.youtube.com/watch?v=oynvA0HINOk

Least Steps (2)

http://www.youtube.com/watch?v=ukmCpOH1UVk

Least Time (0:50)

http://www.youtube.com/watch?v=RdVrma-F_3w

Test Chamber 15

Least Portals (6)

http://www.youtube.com/watch?v=7iPfEmqjdVc

Least Steps (45)

http://www.youtube.com/watch?v=dTf_u4hKSSs

Least Time (0:50)

http://www.youtube.com/watch?v=-9ZLNNJdA-Q

Test Chamber 14

Least Portals (2)

http://www.youtube.com/watch?v=P9BWnTmG46c

Least Steps (10)

http://www.youtube.com/watch?v=b-AKE-vGc0c

Least Time (0:09)

http://www.youtube.com/watch?v=tT9cknW22rA

Test Chamber 13

Least Portals (2)

http://www.youtube.com/watch?v=7arMrfRCTHA

Least Steps (9)

http://www.youtube.com/watch?v=lOKEKFaWxbM

Least Time (0:19)

http://www.youtube.com/watch?v=X47_hhIr1cs