halo 3 terminal help please?

[mr b]

on halo 3 how long do you have to stay at the terminal i have been to them all and it wont give ,me the achievment

 

[copwannabe14]

you have to activate them

 

[Dark Ryok]

Theres some button you need to hit. I dont remember what it was though. But you have to hit it until the screen goes red and stuff like that. Youll know youve been there long enough. It only takes a few seconds.

 

[i heart to make heart]

keep hitting the A button until after you get the red screen. just keep hitting it until it wont do anything more

 

[Captain ROFLraptor]

Stay there until the arrow at the bottom left of the screen changes. I can't remember whether it goes from red to green, or green to red, but it will change. You will also have to wait through it changing location or something twice, when the background starts moving. You'll know what I mean when you see it.

 

[EQUALTREEZ ON LIVE!!!]

you have to play on medium or hard easy wont work