Power ups you will need are penetrate bomb(round 3), line bomb(round 5) and unlimited bombs(round 7 or 8), to be more safe have bomb walkthrough(round 8). From round 10 onwards it should be no problem all as you need to do is get to the bottom left side of the arena and then use line bomb to set unlimited bombs upwards and to the right. Make sure you do it at least one sqaure ahead so that you don't get hurt yourself.