It took me 2 attempts (gave up at level 157 on the first one) but I FINALLY DID IT, happy to submit the first ever single-segment 15x15 run. Of course it's improvable, I really suck at this game. But I couldn't be happier that I kept on going and eventually finished.

*Mod Notes:

• Congrats for having made a 7-hour run!
• Retimed to 7:12:09
• It is very difficult to fully watch a run of more than 7 hours, so I trust you (watching a few minutes anyway).*