Hidden Conditions
First, you have to deal with Vegeta, along with a Tennenman, and Jinkoumen. These two are found in separate locations so you need to use Search to find them.
After taking them out, head to the next field where you'll fight Nappa and his Copymen. Like before, take out the minions first before concentrating on Nappa.
Next, deal with the Kaiwareman, Kyoukoman, and Raditz in the Landing Pod area.
Then, head back to Mountain Area where you'll have to defeat Vegeta. Like before, concentrate on draining his stamina. This battle is quickly over by grabbing his tail, especially when he's staggered.
If you managed to defeat the Great Ape Vegeta quickly, the gate leading to the Underground Lake should be opened. Here, you'll fight one random Patroller. Like the other patrollers, this one is quite strong so make sure to heal up before heading there, especially after your fight with the Great Ape Vegeta.
Since the Patrollers you'll encounter are quite random, their moves and attack patterns will vary. Your best way to survive is to fight defensively and use items as necessary. Defeating these patrollers will give you a Hercule Badge and if you're lucky, a Dragon Ball.