ok, first remove the green block next to you by using the spacebar direction key thing. Then let the dropping bomb explode. Then move to the right and let the other bomb explode.
Now you have to be fast. Get the key and immediate get in the hole to the near right. Push the bottom most rock so it can catch the engergizer thing. This prevents all those barrels from exploding.
Then, clear out all the green blocks in the very top row, careful not to let the spider out cause it'll just complicate things. The spider has a very simple AI algorithm which just makes it track you. Anyhow, the repetition is that you push the bottom-most rock of the column next to the one which is propping up the energizer. Keep doing this to make a walkway of stones for the engergizer. The last stone you need to fill up the last walkway square on the left side is the one in the green area underneath the spider's "pen". Let it drop onto the walkway and push it to fill up the left most walkway square. Now just push the energizer into the receptacle and you win!