@Felthry It's a reference to the hidden easter egg in Gunstar Heroes' second Timeron encounter. Timeron is a boss that in the second encounter in space that shows up and displays the message "How long can you last??" with a timer. The boss lasts until either A) you are destroyed by the ever increasing Bullet Hell that gets worse and worse as time goes on, B) you shoot it even a little bit as it's very easily destroyed, or C) you last 10 minutes.

@Felthry the C route is exceptionally hard and nobody is expected to actually do it, you don't really get anything for it, except that Timeron destroys itself, a message flashes up saying "GIVE UP !!" and then:
" You Opened
- THE SATORI MIND -

Reprogrammed by
1993-NAMI "

Followed by giving you a "Soul Bonus" (points basically) of 930410 (which is possibly a date format of YY-MM-DD meaning 1993-April-10th). Nami is a programmer of the game, Satori possibly means "Enlightenment".

@Felthry I think it's basically a joke by the programmer going "oh jeez I give up, you win, haha, congrats for lasting 10 minutes against this hell, clearly you're on some zen shit", considering that a kinda spooky laugh sample plays when you get the bonus.