Hellish Portals

Hellish Portals
The Hellish Portals are a group of 4 miniboss/boss-level enemies, much like the 4 Celestial Pillars. The Hellish Portals only spawn during the Hell on Earth events, and each one has its own unique fight and minion horde.

Types
There are 4 types of Hellish Portals, each one corresponding to the levels of the Hellish Dungeon. There is a Fire, Earth, Wind, and Spirit portal.

Fire Portal
The Fire Portal is the first portal the player is able to defeat. It opens up at the left-most quarter of the world. To beat this portal, the player must defeat the hordes of enemies it summons. It summons enemies in waves. Each wave will add more difficulty, with a wider variety and larger number of enemies attacking each successive wave. Once the player has defeated every enemy in one wave, the next one will start, on and on until every wave has been beaten. Once the player has accomplished that, the portal will begin to spew endless amounts of enemies at the player until the portal diminshes and disappears. Once all the remaining enemies have been slain, the player can move on and fight the Earth Portal.