Last night, I attempted my first full run though the clockworks. Not only was I successful, but I managed to do it without revives, all on the first shot! On top of everything else, it was also the first time I managed to get though Tier 3 without reviving as well, so I assumed I'd get three achievements at once:
1.) "Cradle and All" for going the whole way in one go.
2.) "Dauntless Delver" for going the whole way in one go without needing to revive.
3.) "Gold Survivor" for going though Tier 3 without needing to revive.
As I hit the Core, I was a bit confused to see Steam only pop up saying I got "Cradle and All" ... scared, I quickly checked the in-game achievements, and saw that it did indeed give me all three, but for some reason Steam only showed me getting one. Today, still somewhat in disbelief, I logged back in Spiral Knights the two achievements Steam previously didn't award -" Dauntless Delver", and "Gold Survivor", DISAPPEARED from SK as well, to match Steam.
This is really discouraging. I'm not here to beg "Please give me the achievements, the game cheated me" although that really would be nice, but at least it would be great at least get this bug acknowledged and fixed... there's no way I want to spend another 3+ hours doing a full run again if the glitch will happen again...
I did the run with one other person, also a Steam user, who got all three while with me... So it seems really unfair...
I made this forum account today, since i couldn't log in via steam. My actual Spiral Knights player is "Adeonwriter" (lower case W) the player I was with who got all the achivements was "Sylviene" also a Steam user. The gate we did was whichever one had the Snarbolax yesterday.
I don't know if this was broken at some point, but it did grant as one before: http://media.spiralknights.com/wiki-images/c/ca/Certifiably_Crazy.png
Are you sure you just didn't get a message? When I got Dauntless Delver it didn't tell me I did, but it showed up in my achievements.