Industrial Castle on Insane mode

[Thaaojo]

how can i beat the Industrial Castle solo ?

[Leonard]

i have no idea,it is so hard

[LogicalMacrochip]

Well, that's a good problem.

Spamming arrows is a good strategy. Go to the leftmost part or rightmost one of the screen and spam them. Of course, you need max agility, and it's a good thing having all 4 attributes maximized up.
Another really good strategy is Combo Locking enemies. Check out Insane Mode/Speed Run Guide in the Guides section. Look entirely to it because it gives many really helpful tips on how to beat insane mode.
Back to Industrial Castle, use combo locking to easly attack a good group of enemies. It's better not to take 5+ enemies together, because if you mess up 1 time they'll hit you to death.
When you see an amount of enemies like the second wave of this level, simply use arrows.

DO NOT USE AIR COMBOS. As you probably experienced, they will hit you with magic jumps and bombs and all that stuff, so it's better to stay away from them.
Use splah magic. It's another good way to keep enemies away from you.

Bring some bombs too. They can help in any way.
I brought Beholder anymal orb and Black Star Mace for this level for doing more damage with the combo locking.

Actually, I think that if you bring weapons or animal orbs that increases agility, arrows' damge will increase. I should try it right now.

Hope I helped in some way :)

*Edit* Yes, actually when I normally shoot an arrow to an enemy, he takes like 27 damage, but if I bring Meowburt animal orb and Skeletor mace , it will give about 35 damage ! It depends on what you want to base.

Oh, and another tip XD. Run vertically to avoid projectiles and attacks. Be fast !

[Thaaojo]

Thanks :)