AH-64 Apache is an American attack helicopter that is mainly utilized in operations against armor vehicles such as tanks and armored personnel carriers (APCs). The video depicts an AH-64 Apache that carried multiple air-to-surface missiles (ASM) or air-to-ground missiles (AGM) called AGM-114L "Longbow Hellfire", which are guided by radar, and it also carried an M230 chain gun.
This is a mod version of AH-64 Apache from Arma 3 that can be found in Steam Workshop: https://steamcommunity.com/sharedfiles/filedetails/?id=1351428303