The idea is simple. Starting at 00:00 on Day 1, Year 1, max out the tech tree in as little in-game time (as displayed in the tracking center) as possible. I'll list anyone who manages under a year. I'm pretty sure it can be done in less than 24 hours, though. No tech-tree-altering, parts-adding, or physics-changing mods allowed. MechJeb and Kerbal Engineer are fine.