35+ hours without sleeping.
5+ liters of Pepsi & Coffee.
In an ex nuclear reactor in KTH, several meters under the surface. Therefore no sun for more than 24 hours (Yay, I'm prepared for swedish winter now!). Note that there are less radiations down there than at the surface!
With around 30 great guys (and girls!) from all over the world.
Lots of fine food (yeah seriously, no pizza but smoked salmon, chicken,grilled pork,etc.)
So what you do when you're a noob like me is spend the night learning how to use the useful stuff you don't learn at school (in this case, struts2 and jsp) and try to have something functional in the morning.
Also, it’s fun to team with people you have never met before
The winner hack by James: CO2 emissions in Minecraft! (Spoiler: Burning trees is bad, and so is burning chickens)
Anyway, it was really fun, met a lot of great people and got a T-Shirt :D