About the critical hit issue:
I hadn't decided on a policy regarding how to describe critical hits when I started the game but I have figured it out now.
The policy is like this:
Joe attacks bob with a longsword 3 times (natural attack roll 3, 19, 20 result miss, hit, critical damage 10, 15, 15 total 60)
Joe missed with a 3. Joe hit with a 19 but did not confirm the crit. The 20 was confirmed and was a critical hit. Whether bob was immune to the critical hit is not public information
So, some of the hits in the past were not displayed correctly. However, I assure you that damage for each hit is absolutely correct and is not a screwup. I took into account each player's defenses and offensive capability very carefully.