The__Critic, there are upgrades that boost your production during challenges.
Roxas3000, I'd say only try one at a time, but make sure you've done challenge 11 first.
Roxas3000, I've ascended 11 times and I can't do *one* corruption. You need to have challenge 11 completed at least before you can hope to complete any of the corruptions. I'd suggest starting one at a time, too.
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