Love the game but!!!!!!!!!!!!!!

I'm getting to the point where I don't know if I'll be able to finish it I already bought Laxius 2 and 3. Big mistake, isn't it
I follow the walkthrough which is very accurate but get stuck on 2 out of 5 side quest.

I follow the walkthrough which is very accurate but get stuck on 2 out of 5 side quest.
