Argentustus

The Argentustus is one of the bosses in.

Behavior
It is extremely aggressive and will begin to fly towards the player almost immediately upon entering the arena. Unlike other creatures, it will not flee when its health is low, and will instead fight until it is dead.

Appearance
The Argentustus has an enormous wingspan, far dwarfing that of an Argentavis or even a Quetzal. Its feathers are red and fiery and a fire burns on its head.

Combat
This section describes how to fight against the Argentustus.

General
Go on the biggest platform on the boss room and get as close to the Argentustus as possible for the least amount of knockback and pay attention to the Argentustus it will stop whenever it will do its gust attack so try to get as close to it as possible during that window of time.

Strategy
When you enter the arena make your way the the far left island. This position is important because the island has a small hill which can be used to stop the player from flying into the lava. Try to keep yourself directly in between the hill and the boss. If the boss uses its gust attack while above land, you can run right up against its legs to avoid the attack. Focus on dealing damage and keeping your position.

Weaponry
An assault rifle, tek rifle or a high damage pump action shotgun is the best option. Maybe also a compound bow with at least 500 damage (Aim for head as the boss has a headshot multiplier)

Dangers
The biggest danger in this fight is being knocked into the lava. The lava is an instant kill for even the strongest survivors. The argentustus will randomly use its "gust" attack, which knocks the player back. This knockback is substantial and can push you off your island and into the lava. This is your biggest threat.

Weakness
It has a large turning radius and is not that fast, so try to take advantage of that.

Notes/Trivia

 * Hardest boss in game along with Dodobitus
 * The boss once spawned as a low level Argentavis which could be knocked out but not tamed. This glitch was patched an hour after it was discovered.
 * The Argentustus has the rapid regeneration ability of the Argentavis. This can activate when it kills the Meganeuras that spawn in the arena.