How to defuse the bomb in mission 3?

There are only a couple points in the game that I use the Caps Lock key to stay
Running, and this is one of them. You need to quickly run through the passages
Until you get to the dead end, killing all terrorists that stand in the way.
Avoid hitting the beeping bombs, they will blow up in your face, and it will be
"Game Over." When you reach the end, the last guy you kill should have wire
Cutters. Pick them up and run back the way you came. Equip the wire cutters by
Hitting the "2" key, scroll down to the cutters with the mouse, and then left
Click). Cut the wires on each bomb to disarm them. There will be seven along
The way, so keep your eye out. If you miss one, you should still have time to
Return and disarm it (if you've taken my advice to run). If at any point you
Run low on health, there should be two medical kits in the level. One is
Located next to the overturned table, and the other is by the stairs in the
Final room. When all of the bombs have been disarmed, return to the final room
Where there will be two more guys at the top of the stairs. Kill them and exit
Through the door at the top of the stairs to end the level.