[He'll rip the next planks in the same, easy way, although he will take the time to pile them up neatly. And then he'll give a firm push to the window, which sorts of .... crumbles inwards.]

I can't hear of feel anything... except water. There's some water all over the floor. Watch your step.

[He says, as he vaults inside through the window without a care.]

It looks like the boards were to keep the water out, but it didn't work very well.