It would probably be a good idea (if you haven't already) to play story mode until you get the hang of it. But no it isn't: You can also do free missions which you by heading to the Flyer Base at each planet. There are still level restrictions, but the individual planets vary in difficulty:
Parum = Easy
Neudaiz = Medium
Moatoob = Hard
Hope this helps.
Parum = Easy
Neudaiz = Medium
Moatoob = Hard
Hope this helps.
"If you are looking for pride...I have it," Ike, Fire Emblem Path of Radiance
Zero456 - Level 57 Fighgunner (6)
Maverick Hunter of the Dark Fin
The Pinkal Hunter and Human Distraction
Mister Stress Out
Zero456 - Level 57 Fighgunner (6)
Maverick Hunter of the Dark Fin
The Pinkal Hunter and Human Distraction
Mister Stress Out