DISTRACTION!

Goose digs out a radio from his heist bag and sneak-waddles to the museum's main staircase. He activates his stealth-camouflage device.

It doesn't... quite work. It actually makes Goose more noticeable, but you hear music playing from the second-floor landing, and the guard moves off. You can make it to the third floor quickly!

Climb to the third floor while Security Doge is investigating!