GTA IV: Chain Reaction Achievement
GTA IV: Chain Reaction Achievement requires you to explode 10 vehicles in 10 seconds. You can pickup 3 grenades under the globe sculpture in the park on the starting island, so this achievement is quite easy to get early on in the game. In fact I started a new profile tonight just to show the achievement coming up as I'd already got it on my main profile.
In the video I steal and pile up cars at a junction. Remember traffic is busier during the daytime so that's a good time to do it. Once there's plenty of cars I throw in a grenade, then immediately another one to the left of it. The achievement is complete in just a few seconds of the first explosion. To finish off I have a quick shootout with the police and die. Oh, and laugh at that foreign music, surely they're not singing "sh*tty sh*tty sh*tty" - are they???
The bonus carnage in the second part of the video is from an earlier attempt. I threw it in because of the guy on fire next to the car on fire. When it explodes he comes flying towards the camera! What a way to die! It also features a blown up fire hydrant and electrical cables sparking on the floor. Some if the nice little touches in the game.