Not so hard if you use these shopping advices : First upgrade the low gun at its max, then save money in order to get the M16 and upgrade it to its max too. Then during the "inuit" boss, just jump around of him and get a lot of ammo and $ until you get something near 50000$. Then buy the minigun and upgrade it to the max ! Stop playing after the king boss. Good luck
This game is just "okay", but its music is really good. I like to listen it... too bad it is just a solitaire card game (even if the desing is not bad)
Nice graphics, good choice of music, but controls are too hard to be 100% efficient and finally, when you progress after each opponent, the power of the next one is growing and totally unbalanced.