Don't buy the nukes just yet. Just keep launching your turtle. hit the turtle when he has reached maximum velocity going downwards with your weapon of choice. The weapons with less bullets are stronger. Always get the tank upgrades if you can. I've gotten over 6m. It took over 4 hours though >.>
[09:59:00] kjwkjw : "omg 24th trill --- whew it's ove-- omg rainbow stream -- whew it's ov-- omg minijacks -- whew it's ove-- omg quad -- whew the song's ove-- omg placeholder note *dies"