You can play it on the engine of Unreal Engine 4, but if you wait a little, there is every chance that it will be released on the PC. (allpcgame.net)
When you kill several people in a row, much like in Unreal Tournament, you get a voice over telling you how epic you are. (thezombiechimp.com)
The weather effects don't just add nice gameplay elements though; they get to show off the improved particle effects allowed by the game from its use of Unreal Engine 4. (xboxenthusiast.com)