The game's controls are mostly unchanged, you do get the addition of the item button, which allows you to deploy and make use of a variety of equipment. While that doesn't change the way you control the game, it does effect the way you develop your strategy for going through a level.
For instance, I discovered that you can use the grav lift in ways perhaps not initially intended. I accidentally dropped one in a doorway and effectively blocked people from making their way through the door. Another time I used it in a low-ceiling room. Once I hopped on the lift, the device pinned me to the ceiling, allowing me to surprise enemies when they walked through the door.