XCOM: Enemy Unknown features four distinct classes of soldiers that you can use at your disposal. Each soldier can train to specialize in Support, Assault, Heavy Weapons or Sniper, all of which have their own abilities, equipment, pros and cons. Class abilities can be combined and chained into one another to get specific bonuses and add extra damage to attacks. During a play session at an event last week, we were able to see some class-specific abilities and moves, including one in which the Assault class used his Suppressing Fire ability to immobalize an enemy, while another class moved around the back to flank the enemy.

Countless abilities can be chained into each other for limitless combos and attack opportunities. On top of it all, you can customize your squad layout, meaning you can mix and match classes to suit your style of play or the demands of the level. Want three Snipers and a Support class? Go for it. Four Assault soldiers? That's fine, too. Your squad, your call.