Hidden Potential: As a soldier is promoted, stats increase randomly.Not Created Equally: Rookies will have random starting stats.New Economy: Randomized council member funding.Damage Roulette: Weapons have a wider range of damage.In more detail, The Second Wave content includes: The XCOM: Enemy Unknown Second Wave content offers a series of advanced gameplay options that unlock a new level of depth, challenge and replayability. 2K Games and Firaxis Games announced today that Second Wave content is now available for XCOM: Enemy Unknown for Windows PC, the Xbox 360 and the PlayStation 3, for free.