Level 4 (Triangles)
35 bloons required to complete the level. You have a total of five triangles of bloons. Aim towards the left of the left hand triangle, this will take out many bloons as the dart moves through its arc. With the remaining darts, aim towards the leftmost dart of each section remaining. It isn’t too hard to actually complete this level rather than achieve a percentage.
Level 42 (Chilly Chips)
42 balloons required to complete the level. With your first dart be careful to miss the ice bloons on the left. Use the dart to pop as many as possible of the group in the center of the screen. Next get as many of the triple darts as you can, include the ice bloon to their right as it will not affect the remainder of the level. With the triple dart aim to get as many of the regular bloons on the left as possible and then, with your final dart take out the whole row of ice bloons to raise your score.
Level 46 (Ears)
25 balloons required to complete the level. There are so many ways of trying to do this level, all fairly straight forward provided you miss the ice bloons. The easiest may be to do a low level arc with the first shot over the ice bloon on the left side. Another shot in the center going over the wall and coming down between it and the ice bloon. Finally go for wherever the most bloons are left, probably at the bottom of the screen.
Level 50 (The End)
50 balloons required to complete the level. Well you take a first look at the screen and think “no way”. However, just hit the red bloon to the right of the monkey and watch the final screen unfold before your eyes. Congratulations!