Level 49 After depositing all the cats, get the jackhammer and drive through to the second to final Level to get the key. Dig holes to bury the tikis. Dig three holes; by doing this if the first tiki resurrects he will still fall in.
Level 76 When you reach the crumbling floor between the elevators, take very slow steps. If you move too fast you will fall through. If a robot is following you, dig at the top of the ladder to bury him. By doing this, if you fall off the bridge you will not land on him and lose a life.
Level 90 Take the umbrella and the bomb first to have enough time to place the bomb and get out before the robots get you.
Level 91 To get to the cats at the top you have to use the warp. Use the second warp from the right at the bottom to go directly to them.
Level 100 Destroy the rocks away from the robot on the left and get the two cats home. Then, kill and bury all of the robots. When they resurrect, they will be locked behind the rocks and you will have already saved those cats.
Level 135 Pick up the first key and run as fast as possible. If the gorilla chases you, you can still dig a hole with the key. To get the second key, dig a hole and jump through. This is faster than treading water to get to the second key. Make sure you have both locks opened before you use the bomb or both gorillas will be freed and you will be trapped.
Level 161 After saving all the cats, grab the umbrella, dig a hole and jump through. Go all the way to the right, then release the rope. There is a hidden fan that will take you up to the exit flower.
Level 166 Note: This is the Level with all the transporters. Go into the transporter on your left, then go left two more times. Next, go right, and the last four are all lefts. You will end up directly next to the "exit flower".