Cosmo Run

This achievement is cumulative and will be the last one you unlock. It will take many hours of grinding to reach 200,000 total points. What's worse is that there is absolutely no way to track your progress. There is no achievement tracking (in the game, on the Xbox app, or on Xbox.com) and no way to see your total anywhere in the game app or the leaderboards. So you're running blind the entire way and will have no idea how close (or far) you are unless you manually track it yourself. But that's a lot of unnecessary work and time wasted so I don't recommend bothering with that.

All of your runs will count towards this total, so it should go without saying that you should work on every other achievement first, since you'll be making progress towards this achievement as you go. When you first start playing, you likely won't be very good and will struggle to get into the 20s or 40s in a single run. Eventually you'll be able to consistently get into the 100s or 200s. As a point of reference, I'm typically able to get around 1000 points in a single run without using a Save Me. Sometimes I will use a Save Me though if I'm not at the 1000 point mark yet. After 1000 points, it becomes more stressful since you are given very little time to react to path changes.

In my opinion, the most efficient area is the 200-1000 point range in terms of earning points in the shortest amount of time. There are many turns but you have plenty of time to react. I will typically only use a Save Me if I'm at less than 1000 points when I fail.

Speaking of efficiently earning points, the absolute fastest way is to make sure you take the "Star path" each time you reach a branching point. The reason for this is, if you haven't noticed by now, stars give you 3 points. You should be pretty familiar with these after getting the other achievements. They show up first around the 80 point mark, and then every 150 or so points after that. They are short paths with a high density of stars and turns. Typically you'll get 50-80 points in only 5-10 seconds. So make sure you are taking these paths every time they pop up, which you can usually anticipate since it'll always be on a straightaway. At first you may struggle to get through these star paths without failing since the turns are awkward, but you'll quickly learn there are a set few patterns in the paths and you'll get used to them until they become easy. Using these star paths also almost guarantees you won't run out of stars easily. I have been consistently gaining stars while grinding toward 200,000 even while making sure I reach 1000 every run.

There isn't really much else in the way of tips for this. Since you can't see your progress, I have tracked that it takes me 4-5 minutes to reach 1000 points on a single run. To be safe I'll say 5 minutes. That calculates out to 16 hours to get to 200,000. Obviously you'll make some progress before you start purely grinding, but that progress won't be very efficient progress since you won't be as good at the game yet. I would estimate you should expect a solid 20+ hours of grinding towards this achievement.