Gun Fu

Gun Fu is a perk in Fallout 4.

Effects
This perk allow each shot on targets after your initial target to do extra damage, but it only applies to a completely new person that you are targeting in VATS, it does not come into effect if you are targeting different parts of one person's body. This does mean however, that if you are in a fight with more than 4 people you can shoot once on each of the 3 initial people and get automatic criticals on every other person that you shoot after that. This can be best paired with a VATS enhanced legendary set, with each piece reducing the cost in VATS by 10%, stacking additively, as well as a gun with an on-critical legendary effect, such as "Freezing" which does 10 points of cryo damage and freezes the enemy on critical hits, or "Relentless" which fills your AP bar when you get a critical hit. One very important thing to note is that only 16 actions can be queued up in a single VATS sequence, even if you still have a large portion of your AP left. It should also be noted that any critical hits do not charge your critical meter.

A very useful way to utilize this perk is if you are defending your settlements, if you have at least 3 turrets that are in your settlement, you can target them as your first 3 targets, allowing you to get criticals for every hit after that, even if there is only one enemy. The turrets will not aggro towards you and if they are already at "zero" health you won't actually shoot at them, you will skip to the next target. If you do this with a freezing gun it is possible to freeze 13 enemies all at once, allowing you to have a little more time to plan out who you are going to pick off first.

Another useful way to use this perk is because of the fact that critical hits are essentially a guaranteed hit, so if you target 3 close people, you can target other people further away and still be guaranteed to hit them, even if the chance is only 1%.

This perk stacks very well with the Better Criticals perk as well as the Penetrator perk and Concentrated Fire.

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