Free XCOM: Enemy Unknown Second Wave DLC makes it even harder

2K Games and Firaxis have released free downloadable content for XCOM that makes the turn-based strategy game even harder.

The Second Wave DLC, for all versions of the game, modifies the gameplay for fans after completing the campaign. It comes as part of a title update out today.

Here's what you get:

• Damage Roulette: Weapons have a wider range of damage.
• New Economy: Randomized council member funding.
• Not Created Equally: Rookies will have random starting stats.
• Hidden Potential: As a soldier is promoted, stats increase randomly.
• Red Fog: Combat wounds will degrade the soldier's mission stats.
• Absolutely Critical: A flanking shot guarantees a critical hit.
• The Greater Good: Psionics can only be learned from interrogating a psionic alien.
• Marathon: The game takes considerably longer to complete.
• Results Driven: A country offers less funding as its panic level increases.
• High Stakes: Random rewards for stopping alien abductions.
• Diminishing Returns: Increased cost of satellite construction.
• More Than Human: The psionic gift is extremely rare.

The Second Wave DLC follows the Slingshot Content Pack, released last year for just over a fiver.