Completed all campaigns under normal difficulty.
Completed all campaigns under expert difficulty.
Shot down 500 UFOs.
Shot down 500 robots.
Shot down 500 mini-copters.
Shot down 300 spherical robots.
Shot down 200 balloon robots.
Unlocked all of Samhill's ability upgrades.
Unlocked all of Echo's ability upgrades.
Unlocked all of Asimo's ability upgrades.
Unlocked all of Shin's ability upgrades.
Played in Local CO-OP Mode.
Scored 2,500,000 points or more during any single stage.
Unlocked all available ability upgrades.
Obtained Samhill's "The Tattered Red Scarf" story fragment.
Obtained Samhill's "Letter #1" story fragment.
Obtained Samhill's "Letter #2" story fragment.
Obtained Shin's "The Miracle Shard" story fragment.
Obtained Shin's "The Small Bag" story fragment.
Obtained Shin's "The Mask" story fragment.
Obtained Echo's "The Bike" story fragment.
Obtained Echo's "The Necklace" story fragment.
Obtained Echo's "The Drawing" story fragment.
Obtained Echo's "The Family House" story fragment.
Obtained Asimo's "The Food Bag" story fragment.
Obtained Asimo's "The Rocket Pack" story fragment.
Completed all campaigns under veteran difficulty.
Completed all campaigns under noob difficulty.
Complete a level without kills
1431
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