OPTICUS'S PROFILE

Hello, I have a problem, I played this game for a while, everything went smooth until I fought my 1st battle with 2 snakes, I have no idea why, but when I beat them game just freezes every time and I just have to force close it, I redownloaded it 3 times, tried installing it on all my drives, tried running it under admin priviliges and in win xp compatibility mode, nothing helps. I run win 7 64bit.
Is there some way to fix this, I really want to try this game out.
Thx for answer in advance.