Your goal is to find your keys so you can leave home base, make your way past a few guards, and sneak into your rivals' base to steal their champagne for your party. You'll have to steal three bottles with Ada's help, and when you have them all in your van, the level completes.
Step by step guide to completing this as quick as possible to beat the gold time, including gathering the three collectibles, so you can net a few cheevs at once:
*** Spoiler - click to reveal ***Talk to Ada directly above you to open the door leading northwest. Go through.
Go past the guys at the table and into the room with two desks, grab the watch.
Talk to the kid behind the green railing in front of the blackboard to get the keys.
Head southeast back to Ada, and then directly northeast through the green door. Unlock the front door and exit.
Go northwest up the street and swing wide to the left around the guard.
Continue northeast and stand by the brick wall next to the swiveling guard. Walk through to the northweest behind the car when he looks away.
Follow the streeth northwest. When you see a horse cart, look right and there's some green bottles in boxes. Grab the watch on the ground beside them.
Continue northwest and enter the building.
Talk to the bartender to open the door to your left. Go through and go upstairs.
The last watch is in the second room from the left, just north of where you come upstairs. If you need to shave a few seconds, talk to the guy to the southeast and ask him to open the door, then grab the watch while he's doing that. Continue through the door he opened.
Climb the ladder and follow the walkway to the next door.
Sneak behind the patrolling guard while he's walking northeast, and exit down the ladder to the northwest.
Go southwest and talk to the guy behind the bars. Use him to open the door and hold the lever for a few seconds, then switch back to Tommy and rewind (to the point after the brain icon in the timeline, but before the door opening icon). Walk through the door as the guy opens it for you.
Continue southwest into the room with all the crates, then exit to the southeast.
Talk to Ada outside. She will distract the guards for you. Follow her down the path. The first guard is stationary, the second patrols. The third guard doesn't matter, Ava will walk around him and open the door for you instead.
Follow her to another door and take control of the guy to the southwest (talk to him). Use him to grab the keys and give them to yourself, then switch back to Tommy and go in the door.
Talk to Ada. She will distract a guard, allowing you to go into the northeast room and grab the champagne bottle. Put it in the back of the van, which is just south of the entrance.
When she distracts the second guard, go talk to the man behind the bars to the north and use him to give yourself the second bottle of champagne. Put it in the van.
This last one is a little trickier. When she distracts the third guard, talk to the guy to the southwest and take control of him. Use him to pull the lever and open the door, but make sure you hold it open for a while. I did like 8 seconds, you could do 10 to be safe. Then switch to Tommy and rewind, hitting play after the brain icon and before the lever icon in the timeline. Go through the door and grab the last bottle of champagne. If you held the lever long enough you should get in and out with no problem.
Deposit the last bottle in the back of the van and enjoy your achievements!