Fusible Transistor:

Once you reach Gamma town, go south and kill the two Orkmen. Enter the coliseum and win five matches in a row. You will receive 150 gold and the Fusible Transistor

Free large Medicine:

Equip Kai-man and go under the water. Find a green switch and activate it, then talk to the school of fish. You will get the Fishhook and a Karabom will join you. Take the Fishhook to the fisherman to get the Medicine

Block Brainbomber:

Bombs can be used to block Brainbombers lightning strikes, the groundtrail, and the targeting

Remote bomb detonation:

Once you have Sibaloon, go back to the lake in the first zone. You will be able to find a cottage with Firekong, who allows you to remote detonate your bombs.

Balloons in arcade mode:

When playing in arcade mode, there is an easy way to get 40 balloons. Start off with the side that has most balloons. And after you lay down a bomb, stand next to it. After it explodes, start pressing A and move around. Since you are invisible, you will be a walking bomb and will get 40 balloons easily.

Heart:

There is a girl in the volcano who wants a T.beef that she will trade for a Heart. She is located below some caves that are close to GLM.Base.

In the first forest, there is a movable block. Once you push it, it reveals a staircase. A man will give you a heart.

From Delta, go up a screen and head to the Northeast to find another movable block with another person with a heart