I just ran into a glitch where I did a very tiny jump, just to get the round over with... and I was sent flying off the screen at 2,000 miles per second.
I can't guess the missing letter for this military word!
armo_red vehicle
I was about to type out my abc's, but I won before I could. They really do need to spell check this stuff.
There are 8 screens, the last screen being a boss fight which is fairly easy (and gives a different ending). I'm not sure if collecting all the coins would give a different ending or are there for no reason.
If you want to restart, you can right click and change the settings to erase your saved game data, which affects ALL of your saved games on Kongregate. So, don't do it if you have any saved games that you care about.