According to ESRB, this game contains: Blood, Violence
Parents should steer their children clear. This game offers little more than continuous bloody violence. Limbs are rent and blood sprays everywhere. Mature players only.
Fans of Warhammer 40K will probably be interested to see their favorite troops and vehicles in action, but be warned: this is not a Warhammer 40K game—this is a Real Time Strategy game set in the Warhammer 40K universe. You can, however, customize the paint jobs on your troops, making this a cheap alternative to modeling.
Deaf and Hard of Hearing gamers will be fine. As is usually the case in RTS games, there aren't any vital audio cues, and what plot the game contains is completely subtitled.