Upon a lot of request. Here is the many user favorite OBS map.
Obs - Sketchy Mission
I hope you all enjoy. Top players will defeat this map in under 8 minutes, while your average players with dedication will take 30+ minutes. This map is not for the beginners (however all CP are possible with persistence). It's one of those maps where you need to "figure it out", blunt force will not get you through.
Goodluck to All
Hope you enjoy!