The API says it's one of those 2. If you can't share a video then try a screenshot and posting it to Imgur of the one after the ogres. The elevator one can be tricky as it can often fall off so I'd advise trying again and when the lift starts going down, keep looking up above where the shielded enemies spawn.
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this is the screenshots
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Thank you, so the 2nd egg isn't there so definitely have that one so it will be the elevator one. With the way it falls from the window it won't always land on the elevator and can sometimes fall off the map. The below video link should help with finding it. https://youtu.be/iRwbwVlFJ9M
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I just watched that video, didn't realise it fell from a window, just thought it was there