Lawrence Barrett

Lawrence Barrett is one of the game's antagonists in Deus Ex: Human Revolution, a member of the black ops team Tyrants and private military contractors Belltower Associates Incorporated.

Biography
A member of the Tyrants, a black ops team made up of multi-national members who work for a mysterious conglomerant of the world's most powerful and wealthy members, Barrett features various augmentations, such as an augmented lower jaw and entirely mechanical arms, one of which conceals a three-barrel minigun. His augmentations are made by Tai Yong Medical.

Lawrence Barrett acquired the scar to his left eye after fighting Ben Saxon in the novel Deus Ex: Icarus Effect. The fight took place en route to the Gulf of Saint Lawrence in the North Atlantic.

Human Revolution
He was one of the mercenaries in the private military company Belltower deployed in Heng Sha and a member of the team which attacked the Sarif Industries research labs. Later, he and Fedorova were tasked with retrieving the Neural Hub from the dead Purity First hacker, but Adam Jensen got to the corpse first. After that, they met up with Jaron Namir in the abandoned bot factory in Highland Park, which in reality was a FEMA internment camp. When Jensen followed them to the lower levels, Barrett managed to ambush him, and was ordered by Namir to eliminate him. However, Jensen proved to be a more competent fighter than anticipated, managing to critically wound Barrett and severely damage his augmentations. As Jensen interrogated the dying mercenary, Barrett told him to go to an apartment building in Heng Sha to find the information he was looking for, then grabbed Jensen and activated the grenades strapped to his chest in a last-ditch attempt to kill him. Jensen broke free by fatally stabbing Barrett in the neck with one of his arm blades, and jumped away just as the grenades went off, destroying Barrett's corpse.

Tactics
Barrett is the first boss encounter in Human Revolution. He attacks primarily with his minigun-arm, and also throws frag grenades. On higher difficulties, frag grenades kill Jensen and must be avoided. Though a boss and thus much tougher than any ordinary enemy, headshots still do much more damage to Barrett, so the player should aim for his head whenever possible.

Barrett is fought in a room with several pillars and boxes for cover. There are supplies located all throughout the room, including valuable grenades. The pillars must be used to take cover from Barrett's minigun fire, but Jensen must move from pillar to pillar to avoid Barrett's grenades. Barrett will also walk towards Jensen whenever firing, and the player should keep a healthy distance between Jensen and Barrett.

Barrett, being an augmented human, is stunned by all three types of nonlethal grenades - concussion, gas, and EMP. Concussive grenades, being the least valuable, are best, but without the flash suppression augmentation Jensen will also be blinded by the flash, so the player should take care to use cover. With enough grenades and perfect timing, it is possible to kill Barrett without him ever being able to defend himself.

If the player does not have any grenades, it is also possible to pick up the various gas canisters in the room and throw them at Barrett. They will explode on impact and also stun him. This also works with the explosive barrels - frag grenades and explosive barrels do quite a bit of damage to Barrett and it's possible to kill him very quickly with either.

It's also possible, though somewhat tedious, to win this fight with the stun gun by repeatedly zapping Barrett. Shocking him with the stun gun stuns him temporarily and prevents him from both shooting or throwing his grenades, so the player can run circles around him while zapping him repeatedly.

After Barrett is defeated, the player should collect all the supplies left over in the room.

Video Strategies
The below videos will help with defeating the boss and contain spoilers. The first is a bare bones minimum on the hardest difficulty - you can complete that strategy with pretty much as little ammo and grenades as possible. The second video is on an easier difficulty and uses the best weapons. Please feel free to watch both as they both contain great gameplay.

thumb|500px|left|A no gimmicks guide to beating Barrett.

thumb|left|350px|Barrett Walkthrough (Sniper Rifle + Pistol)