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> れれっ？ 本当にないっすか？ んー、おっかしいなぁー

It's a conversation from video game, one of the characters is surprised by the
answer of his companion.

My guess it's something like "Huuuh? Not really? Hmmm, strangelyyy"
CC BY-SA 3.0
2017-08-13T18:18:44.817
52270
2017-08-14T04:10:12.663
2017-08-14T04:10:12.663
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question
slang interjections
What does れれっ mean?
It sounds like an intentionally odd or silly rendering of あれれ？, which is
itself a mildly exaggerated version of あれ(っ)？, a normal expression of
surprise.

Your guess about this is correct.

The rest of your guess is actually a bit less so - 本当にないっすか is 'is it really
not there?', and おかしいなー is closer to 'that's strange' (it's not an adverb).
CC BY-SA 3.0
2017-08-13T22:08:15.933
52277
2017-08-13T22:08:15.933
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answer