No, Level 2 Dead Eye is where it automatically marks the targets (just like it does in multiplayer). Also, to get the Marshal Outfit, do I need to do all the hideout in a 24 hours in game time or 24 hour real time?
It's 24 Hour Game Time. It's really easy, I did it in one go. I did it in the order below, with the help of some horse pills so I could get to the spots in shorter time.
1. Pike's Basin- Just basically run and gun.
2. Twin Rocks- If you haven't already done it before, do it carefully, but it's simple. Just raiding a house.
3. Fort Mercer- Take some time, but be quick.
4. Tumbleweed- Easy enough, I just basically run and gun the place.
5. Gaptooth Breach- Run and gun with a shotgun and pistol/revolver.
Also, I'd start at Midnight so you have time. Don't start during the middle of the day, though I'm sure you or anyone could get through it in little less than a couple hours (I did by starting at Midnight.) It's easy and be sure to have plenty of medicine (maxed out) It's simple enough, and like I said, I got it through my first go and started at Midnight.