Anode

make sure when you go to time attack mode you switch the time to 6 minutes. Easiest way i found to do this was just go as slow as possilbe. let the blocks just drop by them self. meaning don't force them down with the or button. when i got this i had less then 4000 points and i was only on level 3

The way I did this I spammed which prevented the block from setting down onto the grid floor making me survive on Level 1.

I wish to thank Stallion83 as I saw him use the same method during one of his streams on Twitch.tv.