Orbs, Reversed Shockwave, and Invisibility have/has not been given an official name; as such, this name is purely conjectural. However, it will be used until an official name is released.
Dark Ghost is the 3rd boss in the game that appears around wave 31. It uses 3 special abilities:
- Red Orbs - Red Orbs that fire around the boss. Deal slight damage to players.
- Inverse Round Shockwave - Earthquake that moves inwards toward the boss instead of outwards. It knocks down players.
- Invisibility - The boss becomes invisible for some time. When it reappears it shoots out a wave of Red Orbs in all directions or uses Inverse Shockwave.
- It is not recommended to use sniper type weapons if the boss is invisible.
- It is recommended to be near the boss but not too near for its Inverse Shockwave attack.
- It is recommended to get to a high place when it does its Inverse Shockwave attack, as it protects you from damage and gives you more time to attack.
- It is the only boss that can turn invisible.
- Dark Ghost was added during V2.
- This boss can glitch sometimes, like after you killed it, the boss will remain standing for a long time before it collapses and disappear.