Solo play on stand-alone, 5 vs 5 (9 computer AIs).  (I realize achievement points on standalone are fairly irrelevant but in all liklihood these errors will probably exist in Pantheon games as well)

Pre 1.1 Patch (i.e. 1.0, perhaps fixed in 1.1 ??)

Computer Ai was smart enough to flip healing crystal flags, but not smart enough to use the crystals (i.e they still ran all the way back to the main base to heal)

Post 1.1 Update (Achievement categories are reset and all counts are zeroed)

"The Butcher" achievement seems to be off by one, By coincidence in my first game following the reset, I had exactly 50 DG kills but "The Butcher" (killing 50 Demi-gods) showed that I was a sliver short of the required 50 on my Achievements bar.

"The Bully" achievement also seems to be off.  Numerous times during that match I was successful at killing a DG who was 10 levels below me and I was not credited for this achievement.  (I paid particular attention to enemy DG levels during the game and went out of my way to try to achieve this one)