It's head is heavily armored, capable of being highly resistant gunfire up to and over pistol rounds and buckshot rounds. To maximize this advantage, the Allosaurus uses it's agility to keep its head constantly in front of its prey. This threat is doubled, as Allosaurus sometimes works in numbers. Despite these strengths, the Allosaurus is vulnerable to fire attacks from flamethrowers and higher-caliber weapons such as the Anti-Tank Rifle and Heavy Machine Gun. In one section of the game, an onslaught of Allosaurus attacks the player, who should make use of the artillery support. Towards the end of the game, an Allosaurus kills David Falk. It also makes an appearance in the game Namco X Capcom as an enemy.
At some point in battles, constantly using flamethrowers on an Allosaurus would send it to "berserk state", in which the dinosaur's body color turns red, and may exhibit increased aggressiveness, as well as higher attack power.
In one part of the game, it serves as a living barrier, blocking vital passages between areas. It is best to be evaded if possible. Once the player is capable of killing it, its territory would then be overtaken by Pteranodons.