Well I thought it was fun.
Normally, I'm the kind of gamer who is terrible at defense games, but for some reason I did pretty well in Xeno Tactics 2. I beat the first level after about three or
so tries, in which I only lost because I was unfamiliar with the interface. (Which is very neat and organized compared to the first XT.) After you get the hang of which turret is better used for a certain situation, it's really not that hard.
The graphics don't seem to be as detailed as the first Xeno Tactic, however, this may just be my fault because I had recently bought a new LCD monitor, and everything looks a little different. The sound is great, however I thought that the bigger weapons having a more intense blast sound wouldn't hurt. The enemies were a little boring, to be honest. Typical spaceship-like robots and the eventual aerial unit. Sometimes the enemy will have a little bonus, like a regeneration, or a speed boost. These guys add an unfair spike in difficulty being most of the turrets turn a bit slow. Overall there isn't much variety when it comes to the enemies, but overall it works.
On the other hand, the turrets were pretty sweet. I especially liked the upgrade system, however I didn't like how there was a level limit. You could have a really juiced up turret with high power and range, but has a low speed, making it turn one degree every second. This is a bit annoying. Plus it kinda stinks that the turret's main priority is to shoot the first enemy in the line, and continue to fire upon that one unit until its out of range. It would be kinda nice if turrets fired at the enemies with the highest health first, then the lower ones.
Other than the few flaws that this game has, it's still a blast, and easily one of the more entertaining defense games of its kind.
I'll give you a 5, just because I like defense games.