All Roses in A Shocking Turn of Events /green/bejne/maGofKetgmuoYIU.html Here's the playlist for all puzzle rooms ?list. Then run to the first room where the Little Sister starts and find an opening in the wall with the fourth Rose in it. Rose #4 - In the room with the pressure plate, once you have obtained Old Man Winter Plasmid, lure the Big Daddy onto the pressure plate and freeze him a couple of times. Loot the RPG turret to find the third Rose.
Now use the Launcher to take out the middle RPG turret and make it fly to a reachable area.
Rose #3 - Kill the Big Daddy and loot his body for a Grenade Launcher - make sure you don't freeze him, because you can't loot him like that. Freeze the Big Daddy and use him to reach the pipe and collect the rose. Rose #2 - In the first room that you enter where the Little Sister is. Rose #1 - On the desk in the room with the U-Invent machine.
Here are the locations of all 4 Roses for the 'The 'I' in Team' - Collector achievement.