Assault characters can be very useful in room-to-room fighting. Their combination of high mobility and powerful close-range attacks suits them well to UFO Crash infiltration and alien base assaults. They also make superb scouts on the open battlefield, stepping into the fog of war while their squad mates wait just behind on Overwatch and Reaction Shots, triggering enemy movement and allowing the team to make reaction shots. Late in the game their Flush Out ability is indispensable.
Nothing gets a soldier killed more quickly than walking around a corner into the guns of an enemy fire team. XCOM enforces a fog of war perspective, which means that you can only see what is within your soldier's line of sight. The interiors of rooms, areas beyond a certain distance, and even the other side of a closed door can all conceal lethal ambushes.
All those facets of base building come together to create a very complex and deep system that will keep the braincells of the min-maxxers between us quite busy. It's a really compelling level of strategy within the bigger strategic picture, and the ability to zoom into every facility to see your team at work proves definitely rewarding when you manage to build an advanced and efficient base.
Once you're done taking care of your base, you can move to the Mission Control room and scan for alien activity. This accelerates the time and normally leads to mission opportunities as enemy UFOs drop on the unsuspecting civilians to conduct abductions or terror missions, while some of their crafts can be intercepted and shot down, or attacked as they land. 2b1af7f3a8