It took my dad and I about 6 hours to install the Enigma shower door. I would say that I am very handy being that I've built and designed two houses before. A lot of time was devoted to checking and rechecking that everything was level and reading the instructions several times to make sure we didn't forget anything. The instructions were very clear and helpful.I think that someone with good DIY skills could put this together without having to hire someone. Don't let some of these other reviews scare you. Challenge yourself, but take your time. There are just a few tips I would like to share:- The first step requires you to cut the metal guide bar to your finished opening. If you don't already have one, you can get a good Dewalt hacksaw from Home Depot for around $25. Heck you already spent $800 on the door. With the hacksaw you'll probably need a table vise to hold the bar steady when you are cutting. I scored the bar first with some pipe cutters so that I didn't cut too crooked. Cutting the bar took about 10 minutes. It helps if you rotate the bar and cut in a new position if your blade keeps getting caught when the cut gets too deep.- Keep those glass edges cushioned. No matter how careful you are someone is liable to bang the glass corner on a wall or drop it too abruptly against the floor because the glass is so heavy. I would go as far as taping on some more cardboard or sill seal on to the corners when moving it around. We chipped one of our corners, but luckily the nylon anti-water strips covered up the damage. We we were lucky the whole thing didn't shatter.- Drilling through marble, porcelain, or ceramic, you need some good drill bits. There are some "glass and tile bits" that they sell at Home Depot with the blue heads. Those are NOT made for porcelain tile. You might be able to get through marble tile, which is a softer material than porcelain, with those things but it will still take you a long time. Get the carbide drill bits made for drilling through tile. Tile drill bits are made to be used on a lower RPM setting and with the hammer setting of your drill. I put my cordless drill down to the lowest power setting.- After getting the stationary glass up, we found that it was out of level horizontally by about 3/16" over 6'. The bubble was still within the lines of my level so I thought no big deal. In hindsight, I should have just adjusted the guide rail brackets in or out to get the glass level again because after I put the moving glass door part up it rubbed against the bottom guide block. It wasn't an awful noise, but I wanted it to have no noise at all. Not wanting to take everything down again and risk smashing the glass, I cut a small piece of velcro (the fuzzy side, not the scratchy side) and slid it in between the bottom guide block and the glass door. To keep it locked in place, I put a small bead of silicone on the back of the velcro before I slid it in. It worked like a charm. No noise when sliding the door.- Our floors were somewhat level, but there was a low spot. Before final placement of the stationary glass, I ran a thick bead of silicone on the low spots to provide some cushion for the stationary glass.- You walls have to be decently level, but not perfect. As long as it's not out of level by more than 3/16" over 6', then there's nothing some silicone caulk can't seal. This may be obvious, but I would recommend putting the sliding door on the same side as your shower head to limit the amount of water that could potentially splash out.- Our shower was a curbless shower, but after placement of the "anti-splash threshold," we now have a 1/4" curb. We probably could have done without it, but it's a very minor tripping hazard. Ha.- Before applying the thread lock onto your door stoppers, make sure you have them exactly where you want them. I tried to adjust one of the door stoppers after applying the thread lock and the set screw wouldn't budge. We put rubbing alcohol into the hole and waited a few minutes and were then able to pry it loose. If all else fails, you'll probably need to get an allen wrench set that has a thicker handle to give you more torque.All in all, it was no as difficult as some other reviewers made it out to be. Although, my perspective may be skewed a little bit because I still think of myself as a DIY'er when I may be more of a professional now.