1. The Knights powerup "Order of the Dragon" (+10 resistance) doesn't reset its effects after a match. This allows the player to start the next game with its effects already in play. Further more, the powerup's effects stack, allowing the player to re-perches the ability and get its effects for a second time and even for a third time and so on, if the player just keeps on playing game after game and keeps buying the upgrade. Needless to say, after 10 games you'll have +100 resistance to your troops! FIXED
2. The Dwarven powerup "Engineering" doesn't apply itself correctly to building with multiple levels. The powerup is applied to the building at the time of being researched or after it and not updated when the building is upgraded. This allows for higher level buildings to gain more HP at the time of researching the skill then those that are built after it. See the comments section below for more in-depth information about this.
3. The Dark Elves "Dark Bolt" skills doesn't affect Spider Priestesses properly. I don't recall the full details about this, but it affects newly produces ones differently to ones already present at the time of the skill's completion. N/A
4. It's possible to sacrifice units with the "Sacrifice" skill that normally wont give you the option of sacrificing them by grouping them along with a unit that can, after that unit was previously selected, ready for sacrificing. If a truly non-sacrificial unit was grouped, then he still counts towards the possible chance but wont be killed off. If a Daemon was summoned with such as unit, then his spawned location will be completely random.