Here is the full list of all 374 Sleengster 2 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Shoot 385 bullets
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Shoot 334 bullets
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Shoot 328 bullets
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Shoot 270 bullets
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Shoot 260 bullets
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Shoot 254 bullets
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Shoot 246 bullets
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Shoot 224 bullet
Shoot 255 bullet
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Shoot 197 bullets
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Shoot 176 bullets
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Shoot 167 bullets
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Shoot 159 bullet
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Shoot 150 bullets
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Shoot 136 bullets
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Shoot 128 bullets
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Shoot 112 bullets
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Shoot 45 bullets
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Shoot 1 bullet
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