the game really requires moments of inspiration...I was stuck on lvl 26 for 2 days and suddenly the solution popped up. Then the remaining levels were just a piece of cake.
The game is increasingly boring after a few levels... too repetitive
The piercing arrows is really an amazing weapon though... strangely, the in-game description does not mention its most powerful property.
 "Liquid Measure 2 Dark Fluid Level Pack"){kind=icon}
 "Santa Rockstar: Metal Xmas 3"){kind=icon}
 "Bowmaster Prelude"){kind=icon}