Sentry Tower Defense

Mechanics
Sentries are a type of equipment used to fire at enemies automatically. The Sentry Tower Defense skill allows players to bring 1 extra sentry gun when basic, and 2 sentry guns aced, for a total of 4 sentries in total.

Strategy
One sentry with skills is enough to hold back enemies in lower difficulties. However, higher difficulties sentries need more support in order to help. Therefore, this skill's ability to create a sentry army is useful for those who plan to use sentries in their builds.

In order to increase the effectiveness of the sentries, it is advised to take sentry skills such as Sentry Mayhem or Engineer it is also recommended to use this skill with Jack of All Trades to bring additional tripmines.