Trying to figure out what that means…
Here’s the context: The Last of Us 日本語吹き替え版 プレイ動画 パート7 - YouTube
Any help would be appreciated 
It literally means “concretely” or “to put it more concretely”.
“Please be more specific.” “What do you mean by that?”
「抽象的(abstract)」の反対語が「具体的(concrete)」です。
Awesome.ありがとうYutakaさん