its a cool game but, in my opinion, the game would be better with:
- a leaderboard for each stage solo for the time left.
- a leaderboard for each stage solo for the points scored.
- a leaderboard for the total time left in all stages.
- a leaderboard for the total points scored in all stages.

i hope you'll release some dlc with new stages and new achievements (ex: score 1000pts in each stage....).