After eating a certain amount of boxes, press the select key (that is, the key next to the pause key on the gamepad before, on the computer, it depends on your setting) to switch to the corresponding bullets or other items.

At the same time, the number of eating boxes is different, and the situation is different. The classification is as follows:

A box, the most primitive bullet, is the kind of bullet that just came out.

Two boxes, different people have different bullets. The first one is a Grenade, the second one is an ordinary machine gun, the third one is a flamethrower, and the fourth one is a time bomb.

The bullets in the three boxes are different for different people. The first is a machine gun, the second is a tracking bomb, the third is a rocket launcher, and the fourth is a time bomb, but it is more powerful than the two boxes.

Four boxes can fire more than one bullet. There were only two bullets on the screen. After eating four boxes, you can shoot three bullets.

Five boxes, after eating, after the character jumps up, there is an amulet (but he can't be everything)

Leave a box. Sorry, I don't remember this clearly. Try it yourself.

Have fun!