This is not an easy mission. Took 5-7 attempts. It requires serious study of the area, planning and preparation.
As you see - it took more than 6 minutes to prepare and less than 2 minutes to execute.
Some useful hints.
Prepare the area - open doors, move explosive barrels to the right position. Important: if the explosive barrel is too close - it will not explode and you will lose time and streak. Put it to the right position.
Start explosions once you have planned and trained well and after you have fixed all 4 grapples. Watch your streak and keep it running. Sometimes you do not need to hurry. Fix grapple and move to another location if you have time on active streak. Explode later to keep your streak alive.
Do not worry about the time. Even when time will be over - you can continue as long as you keep your streak alive.
Have a nice game!

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