The alarm is not pointless if you make the alarm goes to high it will spawn harder enemies. Is part of the strategy. Thats why you go in the box too to make the alarm go down and get easier enemies. For those saying the game is Sick i guess you haven't play GTA right?
Guys, first , make sure what you think might be a bug, is a bug. Lot of people have finished the game so i would suggest you to first make sure you got a bug before voting. The other thing is if you get one please be as clear as possible so i can find it and fix it up.