What's the hardest video game boss battle you ever beat?

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I guess it'd have to be one of the Touhou Extra bosses. Which one is considered the hardest?

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As if getting to this guy is hard enough, try beating him.

>>384148967
Anyone except Nue

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This fucking asshole.

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Just kidding, I never beat him

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Expert 13.

https://www.youtube.com/watch?v=i0wCDBsEOUY

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this guy can kill himself for all I care

>>384148967
Hecatia is fucking bullshit like the rest of the bosses in LoLK

How many bosses in this thread are either final bosses or true final bosses?

Dark Fact on Nightmare.

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I was underleveled though.

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>>384148626
Sauron is shadow of mordor. I swear to god I've never wished any non living thing's death so much

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>>384152404
>hard

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Probably _____Iska from Soul Calibur Legends, you have to be fucking precise with wiimote slashes to send projectile attacks back at him and you can't miss too many times because he eventually unleashes an unavoidable insta-kill attack