Which sounds can enemies hear?

This video shows your point of view, but the audio from your enemies. And me talking over all of it. There are some interesting findings...

0:06 - Switching weapons
0:09 - Firing / fire mode / reloading
0:32 - Sniper rifles
0:48 - Knives
1:02 - Throwing items
1:16 - Picking up items
1:23 - Grenades
1:47 - Movement
2:03 - Jumping
2:22 - Climbing ladders
2:29 - Falling damage
2:37 - Bombs
2:54 - Hostages
3:12 - Conclusion

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Видео Which sounds can enemies hear? канала 3kliksphilip