Killzone 2

Elite mode:
Successfully complete Story mode to unlock the Elite difficulty.


Ribbons:
Successfully complete the indicated task to get the corresponding Ribbon:

  Air Support Specialist: Get five kills by air support.
  Assassination Defend Specialist: Stay alive as an assassination target.
  Assassination Kill Specialist: Kill one assassination target.
  Body Count Specialist: Get 10% of the kills for your team in the "Body Count"
  mission.
  Boost Specialist: Perform five boosts.
  C4 Specialist: Perform five kills with C4 explosives.
  Capture and Hold Defend Specialist: Get ten mission points by capturing a
  point.
  Cloak Specialist: Kill five enemies while cloaked.
  Close Combat Specialist: Get ten kills by close combat melee.
  Disguise Specialist: Kill five enemies while disguised.
  Good Conduct: Get no team kills/suicides, and score at least 20 points.
  Headshot Specialist: Get ten kills by headshots.
  Healing Specialist: Heal five players.
  Kill Count Specialist: Get ten kills in one round.
  Repair Specialist: Repair five objects.
  Revival Specialist: Successfully revive five players.
  Search and Destroy Specialist: Have two objectives placed/disarmed.
  Search and Retrieve Specialist: Have two objectives returned.
  Sidearm Specialist: Get ten kills with pistols.
  Sniper Specialist: Get ten kills with the sniper rifle.
  Spawn Point Specialist: Have five players spawn in the placed area.
  Spot and Mark Specialist: Spot and mark five players.
  Turret Specialist: Get five kills with sentry turret placed.


Medals:
Successfully complete the indicated task to earn the corresponding medal:

  Aerial Supportive: 8x Air Support Specialist Ribbons; unlocks Combine
  Tactician second Ability.
  Army Superior Unit Award: 50x Clan matches won with Clan; unlocks 100,000
  Valor.
  Assassins League: 5x Assassination Kill Specialist Ribbons; unlocks Increased
  Points/Assassination Kills.
  Black Belt: 5x Close Combat Specialist Ribbons; unlocks Increased Points/Melee
  Kill.
  Bodyguard Alliance: 5x Assassination Defend Specialist Ribbons; unlocks
  Increased Points per Survival.
  Bomb Squad: 5x Search and Destroy Specialist Ribbons; unlocks Increased
  Points/Returns/Disarms.
  Corpse Counters: 5x Body Count Specialist Ribbons; unlocks Increased
  Points/Defensive Kills.
  Defense Initiative: 5x Capture and Hold Defend Specialist Ribbons; unlocks
  Increased Points/Defensive Kills.
  Defensive Specialist Ribbons: 8x Turret Specialist Ribbons; unlocks second
  Engineer Ability.
  Example Soldier: 8x Good Conduct Ribbons; unlocks Increased Start Ammo Amount.


Rank bonuses:
Earn more points and get a higher "difference" score to unlock higher ranks and
their corresponding bonuses:

  Corporal: 30 points, 30 difference; can create Squad option.
  Sergeant: 100 point, 70 difference; can create Clan option.
  Sergeant 1st Class: 200 points, 100 difference; unlocks Shotgun and SMG.
  Master Sergeant: 350 points, 150 difference; unlocks Medic Badge.
  Sergeant Major: 550 points, 250 difference; unlocks HGH and ISA LMG.
  Lieutenant: 880 points, 250 difference; unlocks Engineer Badge.
  Captain: 1,100 points, 300 difference; unlocks VC9 missile launcher.
  Major: 1,450 points, 350 difference; unlocks Tactician Badge.
  Colonel: 2,300 points, 450 difference; unlocks Saboteur Badge.
  General: 2,800 points, 500 difference; unlocks Scout Badge.
  Lieutenant-Colonel: 1,850 points, 400 difference; unlocks grenade launcher.


Return to last checkpoint:
While playing the game, hold R2 for several seconds to return to the last
checkpoint.

 