1. Collect the Golden key. 2. Wait for the bombs and rock from building 1 to clear. walk left and hide in the space before entering level 2. 3. Count the repetitions of the bombs falling . Focus on the one that falls nearest to you. 4. Bump the bomb so that it falls in the middle portal with another bomb. (wait you have two bombs to bump :) ) 5. This should make all bombs fall simutaniously with each other. Collect the silver key (not needed but extra points) 6. Time the bombs paths (left , middle, right / restart) and collect the crystals.