After finding Dr. Dyper's friend

I found the colonel, got the bottle of stuff and gave it to the doctor. Now he says he can't help me. Did I miss something? How do I get passed the dudes to the stairs?
Welcome and Enjoy!
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marphy wrote:I found the colonel, got the bottle of stuff and gave it to the doctor. Now he says he can't help me. Did I miss something? How do I get passed the dudes to the stairs?
marphy wrote:Thanks everyone - huge help!