Fun game. Minor glitch: If you quickly press erase, clone and switch at the same time on the menu screen, you can kill all the clones. When you respawn, the menu disappears.
I have a feeling that this game may have been an experiment in rendering. If that's the case, here's something to note:
It's easier to hide items to click if both the background and item are drawn. In this style, the items stick out more. A possible way to get around this is by rendering both the item and background.
You should really get some translation help. I like how unlike most adventure games you don't have to pixel hunt, you just show the things to interact with.
Could use more challenges, though. Quicktime events don't really count.
Another thing: maybe an Angry Birds style aiming sight would be helpful for some players; something that shows the approximate path the bullets will travel.
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 "Infinity Inc"){kind=icon}
 "Reactor Incremental"){kind=icon}
 "Beyond The Universe"){kind=icon}
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 "Drawfender"){kind=icon}
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got it :) thanx.