It initially started out as a brief diversion one night, but I played Dirt 2 for a bit and then proceeded to pretty much finish it off over the next few days.
I mainly did the rally, trailblazer, rallycross, and gatecrasher events, though. The ones involving buggies and trucks, like landrush and raids, were not exactly my favourites; I was fine once I got ahead, but the AI would always create a mess in the first few turns, often locking wheels with me or spinning me around or into the side of the track, leading to numerous restarts.
In the end I wound up doing the minimum of those events needed to complete all of the major events, including the world tours, X Games events, and the Colin McRae Challenge. The latter ended with a nice little tribute video to the guy, which was rather touching.
I’m not technically done everything in it yet, but with all those major events out of the way, and most achievements completed, I’m considering it finished.