Type 1025

The weakest among the Fort-type enemies, it's still a relatively strong enemy on its own, given its stats, the fact that it can summon more enemies with Alert, and that it has access to the Dual Chamber Gun, which causes physical damage and additional Fire-elemental damage, and Burn Missile, which causes Fire-elemental damage. It might be somewhat hard, but it's a good idea to take it down first, before it tries calling for help.