I loved Azgard since it was first released as "share ware with buy option"... There is only two things wich ruin the fun:
1st no skilltree... You just can't see which way the towers develop.
2nd The projectiles. They are not seeking and youll find your towers fire/miss a whole wave and then... it's over!
Nontheless I rated 4/5 in hope that some slight adjustments will be made
 "Azgard Defence"){kind=icon}
 "Defender"){kind=icon}