Message to Otto is a Note in Deathloop .
Location
Found in Updaam at Noon and later, if the Fireworks Boutique is not prevented from burning down. It is stuck to the door of the building.
Transcript
Wow, Otto —
It's not even noon, and you've already ruined opening night, ruiner.
These buildings are like a quadrillion and a half years old. Only a dickbrain like you would think they're wired to suck down power from all over Updaam.
Frank'll NEVER forgive you. Expect a song about what a stupid, hapless shitwit you are to be playing all over Blackreef within the next few loops.
Congratulations,
Elena
Colt Note
Otto the fireworks maker burned down his shop in the morning by syphoning energy from all over Updaam.