i reach KDR 1:1 also very happy liao.

can you recommend what type of mouse needed??

@_@ aiyo, what so fuss about all these?
life ain't fair, so what if games have some of those unfairness?
and the question is, noob or not noob?
What if the bestest best pro player use a tube?
Does that means they are noob tubers???

Just have fun la, is a game for god sake. unless you make a leaving by being pro gamers in codmw2, NOTE -> mw2.

well, i heard some1 used some guns equipped with heartbeat sensor and "hide" until he spotted some1 in his sensor then pull out his shottie to pwn the fella..

Air support: flying aimbot in the sky
Martyrdom: insta-revenge
Last stand: Split-second of invulnerability during the transition to last stand.
Claymore: Who needs teamwork when you can have something (not someone) to watch your back? Even if your victim didn't die from the explosion, the trigger itself would have alerted you and bought you enough time to set up an ambush.
Grenades: the tossing distance made me think its more like a mortar.
P90/LMG: shieldtox anyone?

etc.

How to get NUkE quickguide.

GAME mode.[TDM,GROUND WAR:TDM or Domination.I recommend GROUND WAR[DOMINATION]

Class build.Whatever class or weapon you use can achieve a NUKE,all it need is skill.
Killstreak build.[HARRIER-CG/AC-130-NUKE]

1]HArrier is a must have.
2]CG is more into aggresive play as it would easily get a lot of kills but it is also fragile
2]AC-130 is more harder to shoot down but it is not that effective as a CG in killing lots of enemies in limited time.
TIPS
1]Stick together with your allies do not roam or charge into enemy lines all by yourself
2]CAMP!
3]Follow your instincts and don't take the risk of getting yourself killed EXAMPLE like if you think that room have a enemy guarding or  waiting someone for him to greet don't take the risk instead wait for other ppl to go inside 1st.
4]After getting a CG or AC-130 quickly find a quiet and well hidden place to hide but make sure that no enemies is following you.It is best to hide at your own base.