couple of points
1 - make it in english so we can all understand
2 - make the title less misleading, cuz u cant kill a thing, so name it "annoy fry" at the least, or u could actually kill them
3 - make more lvls
4 - upgrades
5 - more enemies and more lines per enemy
6 - background music
7 - resizing is the least of your troubles with this game
8 - your score is 10 - 8 = 2