The MW2 Nuke Strat

* For my loadout, I used harriers and AC as killstreaks, and I always started off with a rapid fire UMP, stun grenades, sticky, one man army, stopping power, and commando for the first ~5 kills. One man army into either an RPD class with hardline or M4 with stopping power. My other perks went to sleight of hand and sit rep, I moved from sticky to a claymore, and the only secondary I'd ever use when playing seriously was SPAS. Only deathstreak I ever put on a custom class was painkiller, because it had the lowest streak required and most potential to turn it around.
* Any time a friend had the time to help, they'd run an RPD to destroy UAVs, M9 or USP to weaken enemies for me, scavenger and claymores for better tracking enemy movement, and scrambler to misdirect attention.
* I never bothered to track actual success rate, but I'd immediately leave any game with a map I didn't feel comfortable on or felt it was difficult to play safe on, like Derail. I'd also leave if during the UMP phase I started feeling that there are multiple skilled players on the other team.
* I always queued for domination, because the objective nature made it easier to keep track of where people are moving, and kills don't lead to or speed up winning, so there are less situations where it suddenly becomes impossible to get a nuke. Earlier I used ground war, for the sake of having more people to kill with AC-130, or the chopper gunner I often used for those early attempts, but I preferred guaranteed domination and as I got better at farming nukes I became less reliant on killstreaks.
* As soon as I reached roughly 10 kills, I'd camp corners in a small area, trying to move a bit after every kill, and roughly every 5 kills I'd move completely if it seemed possible. Moving was way easier if I had a friend testing the waters and covering me.
* Any time I heard 3+ enemies nearby, I ran, even if I had a bad escape route.
* After getting 10th prestige and having nothing to do with experience, once either team had 160 score or both teams had at least 140, I'd usually play my current killstreak and leave, unless I felt like I was playing against particularly bad players and wanted to keep trying against them till the end. This was both to avoid wasting time and avoid playing out situations

Everything I did was for the sake of keeping track of enemies and making it harder for them to track me. This gave me an advantage in reaction time and lead to winning most encounters. I was never a bad player at the game, but I knew a 25 killstreak is insane to aim for taking fights on even ground, or risking the other person using a similar edge. Anyway, that's all I have time to write for now.