My first survivals world record, believe it or not. After some nice RNG early on, I had to dig up a gloom to protect the final wave against the dancer zombie. Three small mistakes cost about 4-5 seconds: misplay of wave 9 on the 2nd flag, not having enough magnets in the 4th flag, and dooming a fraction of a second early on the final wave. 8:50 is theoretically possible, but I feel good about where this one is for now.