"Ok, well, you're having a bit of trouble on this one, so I'll give you a hint" TIM said. "It is solved using portals"

"Like we have portal guns..." ATLAS scoffed.

"OH, that's right! Totally forgot, sorry mate. Just got to... there!"

A small panel on the ceiling opened up, dropping out four portal guns.

Green could hear TIM wincing. "OH, right, um, make sure those didn't break. Because that would be really bad. Like blackhole bad."

"These again" P-body observed. She picked the orange one up.

Green looked over towards the remaining three.

"Why do we need four, if there are only three people?" Green asked a nearby camera.

"About that. Since you are the new one, we weren't prepared. It was mostly GLaDOS' idea. BUT I mananged to get two single portal portal guns, so you will need to get both. Also, we need to get you a better name. I'll just add that to the to do list"

Green walked towards the portal guns. Carefully, he picked his two up.

"uh..."

P-body walked over to him. "What?" she asked.

"I can't put both portal guns on without a hand." he replied.

P-body looked at his hands. "Hmm... you're going to need help"

She took the other portal gun, attaching it to his hand.

Green observed his hands. "Well... I have no spare hands now.."

P-body shrugged. "Hands don't do much here"

TIM's voice came on again. "I'm the worst testing manager ever! I totally forgot about portal 101! Ok, Blue and Orange, one of you will have to teach Green how to solve stuff with portals. K? Good."

ATLAS walked over to where Green was standing. "You never used a portal gun?"

Green looked at his hands, which now had the devices attached on them. "Well... you know I was just made 10 minutes ago..."

"Never mind. I guess we will have to teach you ourselves." ATLAS said, turning towards a white surface.

"This is where you can shoot portals. Just press the trigger thingy inside of the device. In order to go through the portal, you will have to shoot another portal to where you are going." He explained.

Green turned to the white wall as well. Carefully, he aimed.

And got the first portal achivement.

"First portal! And that weird, floaty thing" ATLAS looked over to a wall near the door.

"Now, shoot the other portal there"

Green quickly aimed and fired the other portal.

ATLAS pat him on the back. "And now you opened your first rift!"

ATLAS and P-body walked though, Green last.

First test, completed.