I can't open the lock!

Hint 1 of 14:

You need to get rid of the wire first.

Hint 2 of 14:

The lock is too strong to cut with the pliers.

Hint 3 of 14:

The acid won't work either.

Hint 4 of 14:

You need to weaken it somehow.

Hint 5 of 14:

Frozen metal is brittle.

Hint 6 of 14:

You need to freeze the lock.

Hint 7 of 14:

Water would be useful here.

Hint 8 of 14:

Did you notice the puddle next to the box?

Hint 9 of 14:

You need something to get the water with.

Hint 10 of 14:

Take some water from the puddle with the small pipe.

Hint 11 of 14:

Use the water on the lock.

Hint 12 of 14:

Now you need to freeze the water.

Hint 13 of 14:

I can't think of any hint leading up to this:

Hint 14 of 14:

Use the fire extinguisher on the wet lock.