The first bug is that twice now I've been able to use command (that skill that lets you move immediatly) to get infinite moves. I'm not quite sure how to repeat this bug, but I've gotten it twice, once on purpose. I've only gotten it when I use command on the unit that has the ability to cast command. Try stuff like moving right next to an enemy, using command on the unit that can cast command, then quickly attacking. If you do it right, you get infinite attacks. I was able to attack over twenty times in a row, until at last the enemy died.
The second bug is for a quest. There is that one quest that gives you a collar that allows you to capture that purple cat and make it a part of your army. One time, the cat spawned before I got access to the collar. I didn't realize the cat was a part of the quest, and ended up killing it, as I thought it was just another wandering monster. Not a game breaker, but it was a bit disappointing to get a useless collar.
For graphical glitches: one time all the water disappeared. I was clicking around a bunch, then the game really slowed down, so I saved and restarted. When I came back the oceans were empty. I'm not sure if they are still empty; I'll have to check next time I play. Also, Amarian Dynasty is a bit bugged. Sometimes, at the start of battle I'll see the game adding the effect. When I read the card, instead of saying "+1 spell resistance" or something, it'll say "+23473493456543" spell resistance (I'm not sure what the actual number is, but it's a bit one. Integer overflow?) The correct bonus is applied, it's just that when the card flashes onto the screen at the beginning of battle, it's off.
For feedback: The warrior skill tree is a little boring. Just boosting attack is useful, but it isn't interesting and it doesn't add strategy or depth to my fighter. That water skill that lets you block enemy spells isn't very useful; over the course of 1.5 games I've had exactly one opportunity to cast this spell, and it failed. There just aren't that many enemies casting two turn spells. Shamans and wolves have been the two most challenging and difficult enemies I've fought so far, which caught me by surprise. AI players are easily beatable, dragons can be quickly killed, but shamans wiped out my army before it was able to attack, and wolves did the same.