Fell Tyrant

The Fell Tyrant is the first boss in Iron Marines. It can be found in the eight and last mission of Sagan-1: War of Attrition. A chrysalis belonging to a partially-grown Fell Tyrant can be found in the The Color Out of Space, the final Spec Ops mission of Sagan-1.

Description
The Fell Tyrant is arguably the biggest enemy in the whole game. It deals damage using his giant paws, and it can also shoot projectiles from his back when it hides under the ground. When hidden in its hole, it will regenerate health on the "yellow" portion of the Tyrant's health bar and cannot take any damage. After all Refineries are restored by the player, the Fell Tyrant will pop out of some Etherium Crystals. He will do so every time.

After coming out of his hole for the third time, he will destroy the Refinery in front of him, including the towers and units next to it, by spitting a giant green Etherium blast. He will do so thrice, the third being the final, as you would have lost. The first two assaults are unavoidable.

In The Color Out of Space Spec Ops, a Fell Tyrant's chrysalis must be destroyed as the final objective. The Tyrant is automatically killed upon destroying the chrysalis, so there is no need to fight it in this mission.

Strategy

 * The Fell Tyrant cannot be damaged by Bouncers, making him harder to kill.
 * The destination of the projectiles it shoots out of his back will show on your map, so you can move your units, which the Tyrant will specifically target.
 * It is preferable to use Rocket towers against the Tyrant in order to deal the highest amount of damage possible. As you will have a lot of Etherwatts at the end of the stage, you will find it easy to buy a lot of them.
 * Use Brawlers and Guardians against him, as the former take little damage but deal a lot while the latter are fast enough to move away from the attacks and deal a lot of damage too.
 * Engineers use their incremental ray against him, so they can be cheap and reliable.
 * When the Tyrant takes damage, part of his lost health will be yellow. Each time the Tyrant goes back to his hole, he regenerates all of the yellow health, which can be dangerous as it is already difficult to lower it.

Trivia

 * On the map of Sagan-1, after defeating the Tyrant for the first time, a huge skeleton belonging to it will appear right next to the mission.

Appearances

 * War of Attrition
 * The Colour Out of Space (in chrysalis)