No you can not. The only way you can complete prestige challenges is by prestiging.
After you reach 70 you have to get more xp to be able to prestige (around 80k xp). Every odd prestige (1,3,5,7,9) you get a new custom class. You get a new emblem and title for every prestige. You can prestige a total of 10 times. When you first prestige you gain the prestige challenges in the challenges section and prestige challenges for weapons. These prestige challenges DO NOT reset when you prestige again.
No
Yes, everything in the Barracks resets besides your title, emblem, and clan tag. But if it's your first time to prestige, then you get the Challenge category "Prestige." Plus, you get two new Challenges for every weapon except the Riot Shield. Once you finish these challenges, you unlock a new title and emblem.
By finishing all prestige challenges (you find them under your normal challenges when you prestige).
you keep prestige challenges, titles, and emblems. You lose everything else you have earned
Kill lots of people and complete challenges and you will eventually get to 14th prestige.
yes, but no one really has it because all titles and emblems can be unlocked with the challenges given but there are also hidden challenges and to get the spinning 10th prestige emblem you must be prestige 10 and complete all prestige challenges, i doubt many people have done that but it is possible.
If a player enters Prestige Mode, every unlocked weapon, killstreaks, perks and challenges will be reset.
theoretically you are capable of unlocking all titles minus about 3 titles per weapon (both primary and secondary). the reason for this is that you cannot start working on the 'Veteran' and 'Master' challenges until you have prestiged. In addition to these gun specific challenges there is also an extra section added to the challenges in the barracks under the title prestige. The PRESTIGE challenges which are mostly killstreak kills and stealth,stun related challenges for which there are 15 challenges. MOST IMPORTANTLY, is the fact that master, veteran and prestige challenges are highlighted in green indicating that they will not reset should you prestige further.
To prestige you must first get to level 80 and get all the xp for it. Next you want to go to barracks ( where your challenges are ) and go down to prestige mode. It will ask you three times if you want to prestige. If you want to prestige you click yes for them all. Now you are prestiged.
You need to complete all of the Prestige challenges (not only the ones labeled prestige challenges but the weapon veteran and master challenges as well), probably the most time consuming challenge too. I am a tenth prestige level 70 with all of the "Prestige" challenges done, but don't have the symbol. Who is going to get 1000 multikills with the Javelin anyway.
you do all of the challenges really fast