I am designing a level-based game where the user completes the level 1, then 2, 3 and so on. There are 200 levels and each is rather short: 60-ish seconds.

I am tracking

• Each played, completed (cleared for the first time), failed and cleared level
• Milestones: number of players to reach level 1, 5, 10, etc. Also for number of failed and played levels.
• Separate new players from returning ones.

However, I still find it difficult to get a clear picture of what is going on from the stats. So what are the best practices for determining where I am losing players?