Hidden Conditions:
The different Cell Jr.s are located in different areas. And the hidden condition requires you to defeat them all within 5 minutes. This is quite a difficult task if your level and equipment isn't that high yet. Individual Cell Jrs have good defense, high health, and can be pesky and annoying to deal with. Two Cell Jrs can be found on two different areas. After getting rid of them, you have to return to the Wasteland where you'll have to deal with three of them at once.