For the record, folks, you do not have to repeat ANY levels to beat this game. I've got one map to go, and haven't replayed any maps. However, the only way skills would be useful is through painful grinding. Still a fun game, though.
Might I suggest you tell us how many enemies are in the waves? You don't have to tell us in the wave guide, but when the box pops up for the wave, I liked when it told you how many to expect. :p
Oh, and for those of you who think you have to grind through the first level before you can beat the second: you're doing it wrong. Figure out how to place your units better. There IS a problem with the experience/gold gain, but it isn't THAT bad.
Hmm I don't seem to be receiving the Playing With Fire award for training more than 20 fire mages. Unless it's worded strangely and actually means that I have to do it on the same map? Also, you misspelled "Absorption".
Is there even a way to beat the third map without grinding? I got to wave 19 with one life remaining, and then killed maybe two enemies of the 19th wave by the time the first one finished me.
I agree with Rubix. I've tried it five or six times, and haven't been able to top wave 15. It's steering me to think that grinding might be expected, which would make me sad.
Hmm the awards seem a bit bugged too. I clearly satisfied the conditions for several of them, but they don't seem to be popping up. The "Upgrade all units on the map to the same element" one, for instance.
Seem to be some bugs to iron out in this game.. ending game or losing a map sometimes crashes the browser entirely (with or without a corresponding loss of save data). Telling us how to get all the awards takes most of the fun out of it, since people will just grind to get them. For that matter, I hope this game is doable without grinding, because if that's supposed to be part of the game mechanic, I'm going to be awfully disappointed. Certainly has potential to be a fantastic game, though.
Seems to be a bug; leveling up only gives me two attribute points per level, whereas a re-spec gives me five per level. No wonder the start of the game was so tough.
Speaking of which, if you WANT to learn about geography, like I did, check out this site:
http://www.sporcle.com/games/world.php
They do it by continent, too. I learned them for fun, but it helps a ridiculous amount in this game. ;p
The only flaming that should exist is flaming of people who refuse to learn about things. Also, people who spend their time on the internet making fun of people for being on the internet. Smarten up.
 "Protector III"){kind=icon}
 "Sonny 2"){kind=icon}
 "Globetrotter XL"){kind=icon}