Resistance 2

Successfully complete the game under the Normal or higher difficulty setting.

After you clear the landing zone and get dropped into the battle, you will get to the top of a small hill on which you will fight off Chimera and some of Chameleons. After you clear this area, notice the large boulder with a destroyed greenish colored bomb next to it. Look at the boulder. Notice it has a crack on it. Walk up to the boulder and keep walking. You will walk through it and find yourself in a small area surrounded by various rocks and boulders, all of which you cannot walk through, but can see through when you walk up to them. To get out, walk back through though the boulder you came in from.

Reach the indicated level in Competitive mode to unlock the corresponding item:

Level 1: Chimeran Rage, Advanced Radar, Electrostatic Orb Burst, Prototype Ammo
Level 2: Hip Pack 1, Hip Pack, Adrenaline Boost
Level 3: Hybrid, Hybrid 2
Level 4: Belt Accessory 1, Belt Accessory 2, Ring Of Life
Level 5: Backpack1, Heatstack 3, Heatstack 4
Level 6: Ammo Clips, Hip Pack 3, Backpack 6
Level 7: Heatstack 5, Heatstack 7, Hose Tech
Level 8: Chest Armor 1, Overload
Level 9: Hose Attachment, Radio, Backpack 2
Level 10: Black Ops Suit, Hybrid Variant, Hybrid Variant 2
Level 11: Backpack 4, Heatstack 9, Arm Accessory
Level 12: Black Ops Helmet, Heatstack6, Invisibility
Level 13: Sentinel Suit, Armor 1, Heat Stack 2
Level 14: Hybrid 3 Head, Hybrid 3 Body
Level 15: Backpack 5, LAARK, Snake Eyes
Level 16: Warner and Hawthorne Heads, Backpack 3
Level 17: Hybrid 3 Variant Head, Hybrid 3 Variant Body, Heatstack 8
Level 18: Capelli, Armor 2, Heatstack 1
Level 19: Nathan Hale Head, Nathan Hale Body, Backpack 7
Level 20: Steelhead Head, Steelhead Body, Backpack 8
Level 21: Chest Armor, Heatstack 10, Backpack 9
Level 22: Grenade Vest, Infected Hale Head, Helmet 1
Level 23: Steelhead Variant Skin , Backpack 10, Steelhead Variant Head
Level 24: Nathan Hale Converted Head
Level 25: Decayed Head, Corpse Head
Level 26: Civilian 1, Helmet 2, Helmet 4
Level 27: Civilian Skin 2, Blue Hat, Steelhead Armor
Level 28: Scientist Skin, Scientist Head, Doctor Head, Wrench
Level 29: Clank Backpack
Level 30: Leech Skin, Deminsionater

Upon reaching the level, various accessories, backpack, chest armor, heads, berserks, etc. Leveling only comes from Ranked competitive by selecting Play.

When you reach a set level, a new weapon, gear, or berserk becomes available. The weapons and berserks are unlocked upon reaching that level but the gear requires enough gray tech to purchase once you hit that level.

When you reach a set level, a new weapon, gear, or berserk becomes available. The weapons and berserks are unlocked upon reaching that level but the gear requires enough gray tech to purchase once you hit that level.

Instead of playing the entire game under the Superhuman difficulty setting, simply complete the last chapter under that difficulty.

This trick requires two controllers. To play Co-op mode by yourself without dying and ending the mission, press Start on the second controller. Choose a class, and start the mission. Leave that player safe somewhere away from danger, then go and complete the mission with the other player. You will respawn instead of dying and ending your mission. You also can gain levels without going online.

You can see an Easter Egg under the broken off bridge. Walk out on the single beam in the middle, then turn around and look to the bottom left to find it.

In Twin Falls, enter the tunnel and get inside a subway car. Destroy the pods inside and some will have a Moai head from Easter Island. These heads were also hidden throughout various Metal Gear Solid games. In Co-op mode, zoom in on a prototype ammo kit on the ground. The phrase "MGS4P4WNS" can be seen on the exterior of the kit.