You need to play a lot of games to get a place on the leaderboard.
Minimum points for last level is 1900 and at 20 pts per game you need to play at least 20 games to get there.
Best advice is don't bust out early because you will get a lot of minus points so play careful.
This is like a lottery, its almost imposible to survive until ITM. I played a lot of this tourneys, but my results was terrible. You also could win some money, but you need a lot of time, to get to leaderboard.