NBA 2K8

Far and away the hardest achievement in the game. To do this you have to beat Kobe Bryant in a Sprite Slam Dunk competition. However, you can't just pick him as one of the contestants, you have to have him show up after the competition is over. The problem is that whether or not he (or anyone) shows up is completely random, so be prepared to play a LOT of dunk offs.

There's a few things that will help:

- Practice your dunks in dunk school. If you can consistently nail the dunk where you do two full clockwise circles and two full counterclockwise circles, you'll be able to cream Kobe. If you're like me and can't consistently nail those dunks, then you'll have to rely on a bit of luck. Practice the up up, down down, and right right dunks.
- Start a dunk off with the following 4 players: Vince Carter, Jason Richardson, Tracy MacGrady, and Lebron James. The reason for this is that these 4 players (along with Kobe) are the 5 that could possibly show up for the "extra match" after a dunk off, so by choosing these 4 you increase the probability that Kobe will show up.
- Make sure you set all 4 players to human controlled.
- For the first three rounds, just keep doing the up up dunk (which is super easy), and after the 3rd scoreboard comes up DO NOT HIT ANY BUTTONS UNTIL EITHER KOBE SHOWS UP OR THE MENU FOR A REMATCH COMES UP.
- If the menu pops up, you'll just have to try again.
- If Kobe shows up then it's all up to you to beat him. If you can consistently (and I mean CONSISTENTLY, as in you are 100% sure you can always nail them) do the full circle dunks, then do them, and you'll very likely kick his ass. If you can't (like me) then for your first dunk put the bench prop down in the centre, and do a down down dunk over top of it. You'll score in the mid-high 80's. For your second dunk do the sprite sign prop in the centre, and do the right right dunk overtop of it. I scored 91 when I did this.

I've seen Kobe have a combined score anywhere from 130 (he screwed up his 2nd dunk) to 185+, so if you are always scoring in the 170+ range it's just a matter of time before you manage to beat him.

Be patient though, this will take some time unless you're very lucky. I ended up playing roughly 20 dunk offs, with about a third of those against Kobe before I finally pulled it off.

And for the record (since some have suggested this): editing Kobe's stats has absolutely no effect on this. I've seen Kobe score under 150 with unedited stats, and I've seen him score over 180 with edited stats.

this is how I did it, use Lebron, Mcgrady, Richardson and Vince. Control all of them but just let the contest run out. (about 25 mins.)
My two dunks
1. Set up construction barrier-- Right stick right then left (between the top of the key and 3pt line)-------94pts
2. Set up car--come from left corner aiming at hood (lowest point)----Right stick up then up (just after 3pt line)-----91pts
You get so many pts cuz not having done any dunks these are not repeats
Once you figure out where to initiate dunk so you clear obstacles, these are easier dunks than the double clockwise counterclock wise moves because they're simple and the window for pulling the Right trigger is a lot bigger.