Just a note, if you click on the ending screen text and then try to scroll using the mouse wheel, the text will glitch up. Otherwise great game, 5/5 :)
In my opinion the Hard badge should definitely be an Impossible badge. While this is a ridiculously addicting game, it takes far longer to get this Hard badge than most others. Otherwise, great game, can't wait for the next one :)
Destroying 40 objects in Event 6 is nigh-on impossible. It took me more retries on this star than all of the other stars combined! It should be changed to 30 to make the Hard badge more reasonable :)
FOR THE FINAL BOSS: Stand on the second block from the left, slightly more towards the right-hand edge than the left. If you trigger the enemies, simply die to go back to the last crystal. Equip your fireball spell and fire about 10 shots. You should see damage appearing on the far right edge of the screen, even though you cannot see the boss. This indicates that the boss is being hit. Continue firing, and you can very easily beat the boss without taking ANY damage! + this so others can see =]
For a secret character hit the button to the far left in the upgrade room, make all six lights glow on the monitor by hitting the lower-middle then upper-middle and then score 1000 points on a minigame that costs $10 per attempt. Plus this so others can see :)
My first run of this I thought I would never even reach the moon let alone Mars. Somehow I got to 100,000 feet with a 22 minute run without reaching the moon. Still, the next day I had enough money to upgrade EVERYTHING to max level... with $17 million left over :)