I completed a kitchen map on challenge mode without shooting and I got accuracy NaN%, while trying for Lieutenant General rank. If I didn't shoot a single time, shouldn't the accuracy be 100%? This game is so buggy and grindy it's frustrating. 2.5/5.
Also, if you can't last 10 minutes in survival mode, then I suggest you don't shoot anything. This will prevent your level going up thus allowing you to avoid the weak enemies. If you have regen at this point, it is impossible to die, basically.
Tip for those having trouble getting the impossible badge: Pause and lag are good. Remember Zunderfury? If you still don't understand, just get yourself down to 1050 cells. When a charger appears, pause and carefully aim your cursor at it, then unpause and clear it to insure yourself. When ghosts start appearing, keep pausing and unpausing to check whether their invisibility is up then kill them immediately, whilst CLEARING those around you. With a bit of practice you should get the badge :)
There is definitely a glitch with boomerang towers. When you fast forward them it only moves half circle. Another major flaw with this game is the lack of a pause button. Overall ok game, but I don't really like the idea of spamming bloons near the later levels. Try to implement more strategy instead of spamming bloons which can cause major lag. Good that at least there's more variety of towers.
Speed completion – Technically 4,000 frames. Actual time may be more or less than 4 minutes depending on your processor speed. Keep an eye on your "best so far." Note that this game typically runs best in IE. [Best so far: 4001]
Wow, I guess I'm out of luck.
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