| Achievement | How to unlock
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| Ambush Lv. 1 | Clear the 'Ambush' mission on Novice difficulty.
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| Ambush Lv. 2 | Clear the 'Ambush' mission on Expert difficulty.
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| Ambush Lv. 3 | Clear the 'Ambush' mission on Nightmare difficulty.
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| Brutal Slayer | Clear the 'Hunted' mission with at least 30% accuracy on Expert+ difficulty.
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| Calm | Clear the 'Ambush' mission with at least 15% accuracy.
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| Combat Instinct | Play the tutorial for the first time.
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| Enforcer Lv. 1 | Clear the 'Hunted' mission on Novice difficulty.
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| Enforcer Lv. 2 | Clear the 'Hunted' mission on Expert difficulty.
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| Enforcer Lv. 3 | Clear the 'Hunted' mission on Nightmare difficulty.
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| Expert Response | Clear the 'Biohazard' mission with at least 30% accuracy on Expert+ difficulty.
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| Expert Sniper | Clear the' Pandora's Box' mission with at least 30% accuracy on Expert+ difficulty.
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| First Step | Clear the first mission.
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| Groggy Counter Lv. 1 | Gained 50,000 points of Groggy Finish bonus.
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| Groggy Counter Lv. 2 | Gained 100,000 points of Groggy Finish bonus.
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| Groggy Counter Lv. 3 | Gained 150,000 points of Groggy Finish bonus.
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| Hijack Lv. 1 | Clear the 'Biohazard' mission on Novice difficulty.
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| Hijack Lv. 2 | Clear the 'Biohazard' mission on Expert difficulty.
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| Hijack Lv. 3 | Clear the 'Biohazard' mission on Nightmare difficulty.
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| Invader Lv. 1 | Clear the 'Pandora's Box' mission on Novice difficulty.
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| Invader Lv. 2 | Clear the 'Pandora's Box' mission on Expert difficulty.
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| Invader Lv. 3 | Clear the 'Pandora's Box' mission on Nightmare difficulty.
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| Iron Nerves | Clear the 'Ambush' mission with at least 30% accuracy on Expert+ difficulty.
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| Marksman | Clear the' Encounter' mission with at least 30% accuracy on Expert+ difficulty.
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| Quick Response | Clear the 'Biohazard' mission with at least 15% accuracy.
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| Sharpshooter Lv. 1 | Clear level 10 in training mode.
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| Sharpshooter Lv. 2 | Clear level 20 in training mode.
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| Sharpshooter Lv. 3 | Clear level 30 in training mode.
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| Sharpshooter Lv. 4 | Clear level 40 in training mode.
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| Sharpshooter Lv. 5 | Clear level 50 in training mode.
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| Slayer | Clear the 'Hunted' mission with at least 15% accuracy.
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| Sniper | Clear the 'Pandora's Box' mission with at least 15% accuracy.
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| Steady Aim | Clear the 'Encounter' mission with at least 15% accuracy.
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| True Hero | Clear all missions on all difficulties.
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| Uninvited Guest Lv. 1 | Clear the 'Encounter' mission on Novice difficulty.
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| Uninvited Guest Lv. 2 | Clear the 'Encounter' mission on Expert difficulty.
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| Uninvited Guest Lv. 3 | Clear the 'Encounter' mission on Nightmare difficulty.
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