When I mute sounds and music, i expect to hear nothing from the game. I had to pause my video because the slashing sounds while reading the "How to play" section were too loud.
Using other pictures from the internet is illegal. It is copyright infringement. Piracy. Call it what you may, if you get sued, you are going to end up paying more money to them than if you had just hired an artist. I would remove this game if I were you.
English is not a word because it is a proper noun.
As for "bad words," fag is not a bad word, it has just been given a bad meaning because ignorant people use it the wrong way. The "bad" meaning of "fag" is slang, and is not included in the dictionary. Similar to the old meaning of "gay." As you probably know, it didn't mean anything close to what it means today.
On slower computers, everything falls apart. A punch takes to long to go into effect, and the enemy is already 4 steps away by the time you punch the air. It seems to me that the enemy walking fps is different than character action fps. I don't know, but I don't think it is supposed to be this way.
This is the first game that I have said this on, but "This game needs badges".
There I said it.
One thing I would like to see implemented is a pause between levels (right before the new wave starts) that shows the new creature for this level.
Another cool thing would be to add an achievement system like that of Zilch or Amorphous+
 "Knightfall 2"){kind=icon}
 "Lucky Tower"){kind=icon}
 "Level Up!"){kind=icon}
 "Snake Game"){kind=icon}
 "Mystic Cards"){kind=icon}
 "Snakes 'n' Letters"){kind=icon}
 "Engines Of Creation"){kind=icon}
 "Warfare 1944"){kind=icon}
 "Run"){kind=icon}
 "Towering Forever"){kind=icon}
 "The Game"){kind=icon}
 "Electric Box"){kind=icon}
 "The Worst Game On Kongregate"){kind=icon}
 "Puzzle Pegs"){kind=icon}
 "Eternal Red"){kind=icon}
 "Monster Master"){kind=icon}
 ":the game:"){kind=icon}
 "SHIFT 3"){kind=icon}
 "Pixelist"){kind=tracking}