I agree with most of the comments. too luck based, little to no skill and the windows are an absolute pain! I managed 2600 odd but that was hell to get. Not even going to bother with trying for the hard, it should be considered impossible! 1/5
I would concur with some of the notes on accuracy. If you're going to have points based on accuracy then you should have accurate positions on the map. For example Wellington, NZ is NOT on the tip of the south island but the bottom of the north island. Also telling me my home is 100km away from where it actually is, is rather surprising too. Oh! Since when is Tasmania a separate country from Australia? Otherwise good fun.
How to avoid the level 3 bug:
Make sure you kill the red boss when it is on the screen i.e you can see it. Then polish off the remaining bots. I was having the bug problem before, tried this and it worked.
Good concept! However I agree with many of the comments about lack of user friendly. However things like one-way valves etc would make the repeating rifle easier to function (and more likely as a mechanism). Some interesting things could be done with venturies and such like also.