Most SP you ever lost?

I've been playing for around 2 hours and a half now, and I just lost around 715,400 SP (yes, I was going for the achievement). It kinda like, hurt. This game is intense.

What was the most SP you ever lost?

ouch.

I lost about 327,000 one time when the game decided to glitch on me and deny me the chance to make any of the buttons work.

Over a million. Incredibly dumb design desicion to make you lose EVERYTHING every time.