Wortis - I have just had a go with the energy homers. These work very well. You can just hang around in the middle dodging the shots and keep on firing. Eventually the pods start to dissapear and each time one goes the game gets a bit easier
Wortis - what other weapons do you have? This level isnt difficult you just have to take your time. If i remember correctly i used the rail gun or the big laser, I have never bought slow time.