nice game.. its been well created and thought through. you may of missed somethings but thats ok.. and Day 5 last wave is awesome 2800 enemies and fast. i managed 2 kill them all. it was tuff but it was fun :)
if you want auto shoot hold a,s,d,f all at the same time the click into the chat box (kongregate 1) and then click back into the game and it should be auto shooting :)
lvl 50 is like easy as, they didnt even get past the second bend and they had 300k+ burn/second
use fire towers and shock towers with 2 frost towers and you should beat them easily... btw whats the highest lvl towers can go since i had my fire tower lvl 15 at 8 haste??