Oh my god, just got the "Runner's High Badge", and I'm breaking a sweat. XD I guess the farther you go, the more intense it gets, no? Fun, but hard game.
This game is pretty fun, although like others have said: reproduction is a key stat to doing well; after all, what kind of virus DOESN'T have good reproduction skills? I hope that there are more maps/experiments, although I hope that the next installment will have a disturbing story to go along with the music. O.o
Phew, just got the 3,000,000 achievement. =)
For those who seem to be struggling, my trick was to spam the nukes as soon as possible once you start having a reasonably fast speed, and shoot when you feel like you may encounter a floating spike or UFO. Death objects seem to only appear on my screen once the turtle guy slows down.
...of course, I used over 50 nukes (more or less) for the run I just did. Heh. XD Now to figure out a way to get around the "Obsession" medal/card....