The game has frozen several times on me requiring a restart, most often if I accidentally right-click, but a couple times after I cast the "Frost Enchantment" I've also had a few problems with my squads outright disobeying orders, most frequently on tight-packed maps. having enemy strongholds within attack range of a nearby path defeats the purpose of an approach path to the stronghold.
totally got the car up to about 250 km/h after carefully convincing it to drive up to the top of the mountain =)
only problem is how the car gets a mind of its own and spontaneously decides to roll backwards out of control into the nearest gun-armed monster. all you have to do is turn the wheel and hold the forward button till the car goes uphill backwards and looses momentum, and then it'll keep going as normal, but it just about made me want to ditch the car even on the light slopes.