Welcome......Let me guess...You work at Amarg?
Shapeshifter is one of my favorites. I read your other post about how you die in the sewers. One trick or method that might help you, you are limited to the number of lives you can have in the game and the game is a save based game. I start out any level and play through it, after the boss is dead, if I died at all I simply reload and play through it again until I have completed the boss with no lives lost. This gives you practice through the level obviously.