The hardest to beat this game is to pass the 90's and reach Tuber. Then defeating Tuber itself is not so complicated, once you've observed his zoning patterns.
I remember having spent tons of games to reach level 101, and then I beat Tuber something like the 3rd time I met his ugly face.
Now, with further training, I rarely lose 1 life to him.


...funny to think there's still some mid-coeffs I'm unlocking after all this time. 
at 3M in my future games. Talking about points, I am still waiting for my 1st Meluzine key.
(plus
