This is a variation of Slenderman's build.

Another map that absolutely intimidated me. I often got lost in the buildings, and I just couldn't find a groove that worked. I then watched a Slenderman video (https://www.youtube.com/watch?v=oMPt3QgZJJ0) and tried it. I failed a few times and completed it a few times, but I felt I was constantly on the verge of failure. The build just wasn't as chill as I wanted it to be. I personally hate my crystal's being hit even though I may still win at the end. It's just a me thing, honestly. After many more failed runs, I finally settled on a build that is chill enough for me. The crystal doesn't get hit, and I feel I can consistently complete it without issues 4-player or 6-player.

On last wave, bring out Builder Apprentice, Tower Boost Monk, and two DPS Apprentices, one with App guardian, the other with a Huntress Guardian. For boss fight Move Tower Boost Monk to Marker 3. Main DPS App stands behind physical beam and shoots boss and repairs beam if needed. App with Huntress stands near seed bombs.
 
  What’s Needed for Build
 • Builders
 • Apprentice - 6k dmg
 • Hermit - 6k dmg
 • Monk - 6k range
 • Series EV - 6k dmg
 • Summoner - 6k hp
 
 4p and 6p Video: https://youtu.be/GGev8WT6kLc