Since we were given more time, I took the liberty of adding a bit more to Muriel with the help of some playtesters. These are the updates I was able to fit into the game within the 3 hours I spent working (4-7pm), and honestly there may be more of them...

Muriel (The Phantom) Related:

• Muriel will now target the closest player to her position instead of attacking the one that was closest upon spawning.
• Muriel is disabled for a second and a half after spawning so that players can get away (spawning animation TBD).
• Muriel's pathfinding is now bound to the server's framerate, and is called every frame allowing for a lot smoother pathfinding.
• Clients calculate and update the closest player-to-phantom target as needed, reducing server load significantly.
• Muriel is now slightly faster.
• Fixed Muriel trying to attack players that were not in the current round.
  
• Fixed Muriel spawning after/immediately as soon as a round ends/starts.

General Notes:

• The Heartbeat SFX is slightly louder.
• The crystal that changes the head now makes it larger in all sizes rather than just taller, to prevent the player from getting stuck.
• The spectator system has been fixed and re-enabled.
• Crystals that spawn inside each other are now able to be picked up (very, very small chance).
• Fixed bugs related to players leaving mid-round.
• Fixed the slime trail not despawning if the round ends before the crystal can be placed onto the pedestal.
• Fixed an issue where the list of alive players would not update correctly.
• Maybe? fixed an issue where players would teleport under the map when another player left the game.