You cant even access you battle tower areas before the fight. Sassan will only tell you to fight immediately. The elevator which can take you to maxos chamber is not working at all. How the hell you going to get into the chamber. Laiken chest has no dragon skill books at all. Even when in the skill training arena where you get the dragon morph stone, there suppose to be a skill book on the desk, but before able to reach the desk, the cg animation already start playing and become dragon in no time.

There is only 1 dragon skill book from, which you gotten as reward from librarian after completing the quest from him. Another one is through fjords, if one decided to explore the cave behind water fall, where patriach is. There no more places where you can get dragon skill books anymore before you even obtain the battle tower.

In bellagar cave, the door will either unlock for you, or you get key for it or other mechanism to unlock. It not that hard as the area is not actually big. Just different situation will bring you to different reward. Be the worst or the best, you get extra 1 dragon armor parts only. Basically nothing important.

You dont even need to jump anything for the key. Its just lying there only.