Legionary Assassin

Legionary assassins are high-end Legion operatives living in the Mojave Wasteland in 2281.

Background
Legionary assassins are small groups of four elite killers, usually led by a decanus, praetorian guards or a centurion, dispatched to eliminate the Legion's enemies.

The first type of group is composed of:
 * 1x decanus (leader)
 * 2x veteran legionaries
 * 1x vexillarius

The second type of group is for eliminating Caesar's greater enemies, composed of:
 * 1x centurion (leader)
 * 1x prime decanus
 * 1x veteran legionary
 * 1x vexillarius

The last type of group is for Caesar's greatest, most hated enemies, composed of:
 * 1x praetorian guard (leader)
 * 1x veteran decanus
 * 1x veteran legionary
 * 1x vexillarius

During these assassination missions, praetorian guards are allowed to use firearms in the place of their unarmed weapons.

Characteristics
Legionary assassins begin to appear if the player obtains a Shunned or worse status with Caesar's Legion. They will travel across the wasteland from their original spawn point towards the player's current location, not stopping until they encounter them. As a result, they can end up attacking the player almost anywhere in the wasteland. Assassins may also attack other non-player characters they pass near while searching for the Courier, such as NCR settlements or traveling merchants (as with all non-player character vs non-player character combat, this only occurs if the player is currently in the same active map cell as the non-player characters).

Legionary assassins typically attack in four-man groups, including a recruit-prime-veteran-decanus, a Legion vexillarius, one veteran legionary and after: Legionary assassins may also appear after aiding the Legion's enemies, namely the NCR, by successfully completing the quests Three-Card Bounty, I Put a Spell on You, I Don't Hurt Anymore, or any other quest that improves the reputation of the player with the NCR.
 * a veteran legionary
 * a centurion
 * a praetorian guard

They will have weapons and armor depending on the Courier's standing with Caesar's Legion and their level. The weapons can range from simple 9mm pistols, caravan shotguns and machetes to 12.7mm pistols and sub-machine guns, assault and marksman carbines brush guns, thermic lances, or a super sledge.

As of patch 1.4.0.525, legionary assassins level with the player, up to level 45. At higher levels, this gives them very high health on par with a non-player character companion. Additionally, the praetorian and veteran assassin may be equipped with Legion centurion armor instead, making them all the more difficult to kill.

Spawn points

 * Directly north of the fast travel point at the Nipton Road pit stop, behind a rock.
 * At the Ivanpah underpass near the Mojave Outpost (up top and near the middle so they can attack from either approach).
 * On the highway directly behind Wolfhorn ranch.
 * Across the tracks from Ranger Station Charlie.
 * On the highway between Novac and El Dorado Gas & Service (approximately when passing the Southern Nevada Wind Farm).
 * From behind El Dorado Gas & Service.
 * From Between REPCONN headquarters and the NCR Ranger safehouse.
 * From the western end of the bridge between Cassidy Caravans wreckage and the Grub n' Gulp rest stop (will attack from either direction).
 * Just south of Fields' shack, across the tracks, are some squatters around a burning barrel. Spawn is south of them, east of the New Vegas medical clinic.
 * Northwest of the Griffin Wares sacked caravan, on the road that opens into the Ruby Hill Mine area. This group will also attack if the Courier remains too long in the area of the Followers safehouse.
 * Between Chance's map and the mouth of Red Rock Canyon.
 * On the train tracks north of Nipton (just slightly north of the coyote den).
 * Just outside of Vault 11 in the direction of the El Dorado substation.
 * North of the emergency service railyard.
 * North of the raided farmstead.
 * Along Highway 95, north of Camp Searchlight, just past a partially collapsed road sign.

Appearances
Legionary assassins appear only in Fallout: New Vegas.

Bugs

 * Legionary assassins are better equipped with high-tier weapons and armor (e.g. centurion armor, super sledge or thermic lances) from the early game (levels 5-11) instead of the middle or end of the game.
 * After a while the Legionary assassins may permanently disappear from the game no longer appearing in-game.
 * Fast-traveling before the assassins become hostile may cause them to despawn instead of tracking the Courier to their new location.