Game cleared over 'Easy' difficulty from start
Game cleared over 'Normal' difficulty from start
Game cleared on 'Hard' difficulty from start
No hit over 'Easy' difficulty from start
No hit over 'Normal' difficulty from start
No hit on 'Hard' difficulty from start
No dead over 'Easy' difficulty from start
No dead over 'Normal' difficulty from start
No dead on 'Hard' difficulty from start
Hit a headshot 5 times in a row
Kill 'Metro chaser' when it tries the last blow after train stopping
Kill the boss with using only sub machine gun after getting on the train
Kill the boss with using only rifle after getting on the train
Make kill or knockdown with head shot 10 times in one game play
Make kill or knockdown with head shot 30 times in one game play