Engineer

An invaluable defense tool, the Engineer's sentries, dispensers, and teleporters are very helpful to defend a point or cart. On offense, the Engineer is able to consolidate the ground gained by his team, and assist them in getting to the battle.

6v6

Main Article: Engineer (6v6)

In 6v6, the Engineer is considered an offclass. Most often used on the map cp_gravelpit, the Engineer is only used to defend last on most maps. The main purpose of the Engineer and his sentry in 6v6 is to soak up damage and waste uber to let his team pop later. Occasionally, it may get a few kills as well, but for the most part the engineer waits for his sentry to die, then switches to his main class to get cleanup frags. It is important to note that a well-placed Sentry can prevent the other team from pushing in with a Kritzkrieg, as they will not be invulnerable and the Engineer's Sentry is immune to critical hits.

Highlander

Main Article: Engineer (Highlander)

The Engineer's main job in Highlander is to defend points and deny areas to the other team. Through the use of the Sentry Gun, the Engineer is easily able to defend and stall for a point in time. However, Highlander presents a new risk in the form of the Spy, whose Sapper can destroy the Engineer's buildings. The Engineer can also use such tools as The Wrangler and The Gunslinger to be more effective on offense or to assist in defense. The Engineer is also often used to push the cart on Payload maps.