I got 361666. The came can be rather easy. Especially if you sit under the right platform. I would consider increasing the amount of enemies from the bottom as time goes on, maybe add an upgrade or two, or a health pack or two, or just increase the hit points the enemies have as time goes on.
Anyway, in its current state I think the game is great! It is very simple to play and understand, and really provides a great time killing experience.