ok, the idea is good, and it is fun, but there are a couple of things that spoils it.
BUGS
-If you clic a vicking, make it stop, then clic outside the game, the game will pause. If you clic back on the game, the vicking will start attacking. So when you have 12 vicking stop, they all attack again.
-The tower at the end does not get any damage. It's invincible...
-When sending a warrior vicking against the arrow ennemy, the arrow guy did no damage to my vicking, except when he was on the ennemy. Then my vicking just died and the arrow guy had half his energy bar.
-When upgrading, the text is so small that it is hard to read.
I wont go further since it's getting boring with all those bugs.
Have fun!