Took a couple tries. This attempt worked because I realized I should try to keep the statue behind me. They don’t deal much damage, the problem is gravity. The enemy also solves the problem of gravity if they wall me in. The walling me in only helps if I’m not close to the ledge when they do it. Sadly activating the boss fight in this area disables this encounter, so you got to have fun while you can because you won’t be able to do it later.
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