xcom is squad based strategy with a very heavy emphasis on line of sight, covering fire, positioning, and destructible environments fucking up those other 3 things. essentially a swat team using guerrilla tactics against aliens with psychic powers and bigger explosives
shit hits the fan very hard in this game but it's actually incredibly exciting and you're expected to take losses. especially 2 with War of the Chosen expansion, enemy heroes will crash into regular encounters
game's also pretty enough and all the animations are cool