From the start of the level, push the boulder over the edge and go down, press “p” to pop the balloon to your right. Collect the key and torch then go back to where you popped the balloon and light the TNT on your left. Go left, 1 down then push the boulder all the way left, now go back to where a balloon is under a crumble wall. go down 1, up and right quickly, then push the balloon all the way right, over the sense pad.
Go back where you found the balloon, go right 1, up 1, then right 2 and down to get the torch (do not go through the crumble wall). go back to where this section starts, and go down to light the TNT, then press down slowly until the balloon comes up to you, take it up and quickly turn right. Then push that balloon to the sense pad.
Collect the torch at the bottom, then the key (two left of the diamonds) go up the long passage and then make your way right to where a chest is over TNT. Get the chest and TNT at the same time, now go and collect the 4 diamonds, make sure you leave the one on top of the balloon for last. This bit should be simple, push that balloon right, it will float up that huge shaft, now make your way up and left to the balloon (not through the crumble wall) and push it over the sense pad, one more to go.
This picture is just to show you that the crumble wall must be kept.
Go to the balloon in the bottom right, and push it left, up the shaft and then onto the sense pad (easy when you know how).
Get the torch in the middle right and go right, lighting the tnt, leading to two diamonds and a chest. This next bit is only for skilled people, don’t attempt if you have a stiff keyboard, wiggly fingers. Go to the balloon two left of the tnt you lit, press “p” and go up until your below the boulder. You have to go down 2, left one very quickly, without breaking the crumble wall below you, good luck. If you do it, get the key and open the chest.
Now go down the crumble wall to the chest, two diamonds, torch and the exit. Get the torch and go down my favorite long shaft to where two gates are, this bit is tricky. Go to the bottom gate, press left 2, then quickly go one left, one up. Once the TNT explodes, get the key, and exit the level. It is much easier to do that part if you use the bottom gate.