Yes you lose everything but titles and emblems
Yes, if you prestige you will lose all your weapons and will have to earn them again.
you keep prestige challenges, titles, and emblems. You lose everything else you have earned
If you have not prestiged then you do but if you have you get to keep the prestige veteran and master kill numers
On MW2 when you get to level 70 you cant go up any more levels but you can prestige which is when you start the game again to get all of the titles and emblem's. The bad thing is that you lose all your weapons and killstreaks. The good thing is that there is the emblem next to your name and it is obvious that you are really good. To change to prestige once you are on level 70 you go to 'barracks' and go down to 'prestige', then select 'more info' and then when you decide you continue and prestige.
You can Prestige in MW2 precisely 10 times.
in cod black ops there is a 15th prestige and in mw2 there is only 10 prestiges because to prestige in mw2 you have to get to level 70 but in black ops you only have to get to level 50 to prestige
If you go prestige you will lose all your wepons, but gain another class every other prestige.
When you prestige it's simply brings you back to level 1.It does not make you stronger.When you prestige you lose your guns but gain a new title.You also have to do all challenges again and you get an extra custom class.Also when you prestige you do not lose any titles or emblems you got before you prestige.
No
NO
If you get prestige, you get night vision goggles!
By entering prestige mode 10 times.