So I have had two achievements pop that I didn't earn.

- Standing Stones: "Find 13 Standing Stones"

I found maybe 3 or 4 other than the original 3 you find at the beginning of the game. I quick-traveled to the first Standing Stone location on two occasions since it was close to my destination. The achievement popped the second time I returned! I guess it counted all three upon every visit, lol.

-Delver: "Clear 50 Dungeons"

Okay, I didn't count how many I have cleared, but I am pretty sure it isn't 50. If it is, then the achievement just had a severely delayed pop. I had been running around the cities fencing goods and upon talking to the female Khajiit merchant outside of Whiterun the achievement randomly popped for me.

Anyone else have weird issues like this?

Besides the foreign language "Master Criminal" bug. I have seen that reported like 100 times.

I got the achievement for doing 50 misc quests...but I wasn't sure if I had done 50...but I probably had and didn't keep track.

Standing Stone Achievement just bug / glitch hit me too. I fast traveled to the "Guardian Stones." I've only actually discovered 3 or 4 others.