Second Wave (EU2012)

The third DLC released for XCOM: Enemy Unknown, Second Wave is installed free of charge, unlike the previous DLC. The existence of Second Wave was unknown since the released of the demo but the developers only finished ironing it out after the game was released, and according to Jake Solomon with the help of the modders who had already discovered how to activate it and were testing its features.

Second Wave adds Advanced Game Play options to increase the difficulty and randomness of the game, described below. The options are unlocked as the player wins on advanced difficulty levels.

Starting Options

• Damage Roulette - Weapons have a much wider range of damage
  • Does not apply to explosives.
• New Economy - The funding offered by individual council members is randomized.
• Not Created Equally - Rookies will have random starting stats.
  • Range of Aim: 55~80. (normally 65), Range of Movement: 11~13 (normally 12), Range of Will: 25~60 (normally 40)
• Hidden Potential - As a soldier is promoted, their stats will increase randomly.
  • HP gain is randomized too. Soldier may get HP at the rank normally don't, or don't get when normally would.

Unlocked after winning Normal/Classic/Impossible

• Red Fog - Any wounds taken in combat will degrade a soldier's stats for that mission.
  • -15 aim with light wound, -30 with heavy wound.
  • Even 1 point of damage is considered as light wound, even though that HP is from armor.
• Absolutely Critical - A flanking shot will guarantee a critical hit.
  • Shots to flanked or exposed target has +100% crit chance, rather than +50%.
  • Hardened target has -100% chance to hit by critical, rather than -60%.
• The Greater Good - The secret of psionics can only be learned by interrogating a psionic alien.
• Marathon - The game takes considerably longer to complete.
  • Time for research: *3, Time for facilities building: *2, Cost of items: *2, Days in infirmary: *2.
  • Marathon don't work if tutorial is activated.
• Results Driven - A country will offer less funding as its panic increases.
  • Funding is cut by 20% from countries with level 4 panic, 40% when it's level 5.
• High Stakes - The rewards granted for stopping alien abductions are randomized.
  • This means the number of engineers or scientists and amount of credit you get is randomized. You can see the rewards before launching the mission.
• Diminishing Returns - The cost of satellites increases with every one that is built.
• More Than Human - The psionic gift is extremely rare.

Unlocked only after winning Impossible

• Total Loss - Lose all gear from soldiers who die in combat.
• War Wariness - Overall funding levels drop inexorably with every month that passes.
• E-115 - Elerium stores will degrade over time.
  • Elerium has half-life of 15 days, which means you lose approx. 4.52% of Elerium stock per day. (or 1% per approx. 5hrs and 13mins.)
• Alternate Sources - The power requirements of all facilities are increased.
  • Power cost of all facilities are doubled. Base power (30 on classic) is doubled too, but power generators make same power.