In case you people didn't know yet, after you use a weapon COMPLETELY UP, you have to wait for the red bar to COMPLETELY fill back up before you can fire that weapon again at all. That might be the "lag" you are talking about.
Gold on all of them, and I got every single one on the last level. It's not that hard. Just click two super circles right next to each other really quickly.
AAAARGH. I was 1 gloople, yes, ONE FREAKING GLOOPLE, away from beating the big nest when the stupid queen decided to show up and turn me into mincemeat. I must go into training and exact my revenge.