C&C: Reign of Steel is a re-envisioning of the Tiberian series, so it is completely separate from the original universe. However, some parts are still similar to the original - the appearance of GDI and Nod for example. Because I am not sticking with the original universe I can make major changes to the appearance and feeling of the game.
Stalker Sniper Cannon work similar to rail gun it can pierce multiple target to deal damage but be careful her attack also do damage to allied unit who stand on her way.