Fun fact: There's no video game out there with a vanilla non-scripted general-purpose bandit AI that seeks cover, surrounds, throws grenades, heals/retreats when damaged, communicates between each other, targets and follows the player through a Multiplayer voxel world in a believable manner.
Most advanced ones just move to the player and target him/her while following him/her with significant glitches, like Empyrion. There are also scripted ones , that have a bit of brain but within a very limited area. Some non-voxel games do achieve some of those features, like Rust, with scripted and area-limited NPC AI working in Multiplayer.