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[bravo, scottamus!] To apply for the job as a (replacement) Batman, you have to make it to the heart of the cave past all the traps he set up to test you. There, you see a table with the application form on it. Now that you think about it, the ad in the paper did say "Those who don't make it to the heart of the cave need not apply."

Source: Kanji Koohii community