Go from Big Bang to Big Crunch in under 20 minutes. No menu respawning.

If you start one, you have to start as an asteroid. This is also an achievement.

Once you get your God Options, just spawn as much as you can absorb for each stage as fast as you can, using Physics options to negate collision damage, and once you go black hole, hold Z, X, C, and V as mass falls into your gaping gravity well, quickly completing this achievement. The acievement's description does not say that you can't use any God or Physics options to complete this achievement, so it's fair game to use them; it's menu respawning that is not allowed.