your gonna need the snowball gun that you get close to the end and finish what is left than restart fully once you collect the flame thrower you will get the snowball gun right there at the same time then as you go around look in the trees for glowing blue orbs they are bags of coins and shoot them with the snow ball gun and as long as you get them all and DON'T SPEND ANY coins you should have enough and right before you enter the area you meet mari and get the gun there is a lot of the blue glowing orbs to shoot