Evil Spirit

Evil Spirit is the main antagonist in ASU.

Appearance
Evil Spirit is a red glowing orb surrounded in a dark colored membrane. It emits a reddish-black smoke constantly.

Behavior
Evil Spirit has 5 different spawns and a random one is chosen every round. Once it is spawned, it will always home in on the Player. It can phase through walls, but with a bit of a slow down. Each time a key is collected, it gets faster.

Once it touches you, you will immediately die. The message shown on the screen is, "You're heart ceased function upon immediate contact with the Evil Spirit..."

Strategy
Below 3 keys you can just check out the map willy nilly and not have to worry about it due to its sluggish pace. It can still kill you though so keep cautious if you see it.

However, once you get to 3 keys or up, it will start picking up the pace, so you have to constantly be on your feet to get away from it. A good strategy is too just run from it, recover stamina, then run more.

In the 5th key run however, there is a general strategy, loop around the place, wait for it to come close to the spawn hall, make sure to recover stamina, then run around back to the Exit Door and try to get 2-3 locks undone. If you think you have time, you can just go for the rest of the locks you haven't yet done. You can also just do some locks early in the round so the difficulty will be lessened in the final chase.

Trivia

 * The only time its name is mentioned in-game is in the death screen.
 * In 1.0.1, it received nerfs
 * In the same version, the height it hovers at was greatly increased to be almost eye level with the Player.