Great Fun! Loved it!
Phew just completed it! That is one brilliant game! Simple but effective. To be honest, it's one of my fav defense games online!
The graphics were nothing to shout about but that really doesn't bother me, nor does it subtract from the game in any way, in my opinion. It's like Turoc Seeds of Evil on N64, for example - not amazing graphics, but great game!
A few things maybe could be done to improve it a little... When starting new levels, maybe your avatar hero guy should keep his previous level, experience and items. I didn't word that very well, but for example when I was at lvl 20 or something on the last level, after completing that i went back to the 2nd map stage but I was back at lvl 2! Aww, I wanted my hero to destroy them all single handed!
Also thought the end could have done with an little victory animation? Not sure if there is any after playing it on Hard (I only did easy... *shame faced*) but it would have been cool to see my Death Knight stabbing a sword into his enemy, or planting a standard in the surface soils or something! Music was good but it suddenly hit me as quite repetitive after about half an hour of play. But thats not too bad, I was too focused on the game!
All in all, a VERY nice game! I would definately try any other newer versions of this kind of game, if you've made any! :D