Destiny of End

[Steel Beast 6Beets]

I occur with Siletrea. Can I get the name of the normal battle theme?

The normal battle theme is called Graceful Resistance, and is by Dibur. 

You can see his works and such here: http://dibur.moe/

The song is from his royalty-free Battle Themes album, as is the boss theme. 

Thanks, I'll be sure to check the compositor's works. The theme gave some heavy Motoi Sakuraba (Tales of series, Golden Sun, Baten Kaitos) vibes.