Plenty of Sci-Fi Hack n' Slash to go around
First of all, here's a general warning: The Force Unleashes series is known for the ability to bloodlessly and brutally demolish enemies, and the protagonist is a clone of a Sith Lord-turned-Jedi Knight. The game follows a clone of the (now dead) main character from the first game. Said clone has all of the original character's (Starkiller's) memories, and as such, is essentially the same person. That said, he uses the Force and two lightsabers to mow down endless and copious amounts of stormtroopers, Sith acolytes, and battle droids. His faceless foes will lose their arms/or heads when struck down by a lightsaber blow. Force Lightning will leave them staggering and stumbling to the ground, smoldering with flame and smoke. Force Push will blast them across the room, into walls, off of ledges, etc. And then, that's not the worst you can do. Tossing them into disintegrating force fields, electrocuting the jetpack-equipped storm troopers to overload their jetpacks and send them spiraling, and using the Mind Trick to make them fight each other/commit suicide are some more creative approaches. They can also be dragged across the floor with the Force, impaled, and transformed into living bombs. Fortunately, it lacks the Force Choke ability of the first game, but this can easily be counterpointed by the sheer capacity for murder Starkiller is capable of. One level even features fans that foes can be blasted/tossed into, and an achievement, "Poor Bob", is offered (on the PS3, at least) to players who Force Grab, impale, and electrocute a foe, and then toss him into a wall/off a ledge. Other then that, there isn't too much else you need to worry about.
What other families should know