It's time to get the last bits of gold out of the vaults in the final level of the game.
World 6
The ghosts are indestructible, but you can leap off their heads to get to higher places. Also, watch out for the stone block enemies, as they will jump in place and flip around. They take two bops on the head to defeat. There are also wheels on chains that swing around in a circle, and you'll also want to avoid those.
At the first swinging wheel that swings around in a circle, jump into the nearby pit to the right. The white spikes do not hurt you, but the black ones do. From where you drop down to, head to the left to find the first vault.
The tumbleweeds move back and forth, and jump upwards in place every so often. Strangely, you can jump on them to defeat them.
From here, you'll need to avoid the wooden spikes and jump off the ghosts' heads in order to get to the exit of the first section. In case you approach a low spiked ceiling, just walk to the right. Do not jump in that area unless you want to lose health.
In the second section, when you reach the "indoor" area, go all the way up, then walk left through the spikes at the highest point. Just keep walking left to find a hidden area. All the way to the left is the second vault of the level as well as the final one of the game. Just remember to jump on the way out when you come back.
The boss is a giant cloud with a cowboy hat, which may or may not be Jake the Ghost. You'll need to jump on his head when he flies up from the bottom of the screen, and you'll also need to avoid the balls that he drops, which roll back and forth on the ramp you'll be fighting him on. If he shows up from the bottom center of the screen, head to either of the sides and be ready to jump to avoid the three-way shot. This boss has ten hit points, but if you pay attention to what's going on and stay away from the rolling balls, you can do this.
If you've gone through all the vaults in the levels and collected all of the coins in each one, you'll get all of the stolen money back from Jake's clutches, and Jellystone Park can stay open all winter! Congratulations! You just beat Yogi Bear in Yogi Bear's Goldrush!