Some achievements are bugged or not exist on PC version?

[SoRRoW]

What the hell. I've just done combo of 70+ moves and no achievement poped up. Tried it several times ending with 50+ and 60+ and still get nothing. Does achievement of 50x moves exist on PC version or not? It's really weird, cause XBOX360 and PS3 versions have it.

[Python Jones P.I.]

There was one in Arkham Asylum, the one in City is the perfect freeflow ones where every attack has to be used in one combo.

[SoRRoW]

But apart from these ones, 50x Combo achievement didn't make it to PC I guess.. Hm, really weird

[Rellik66]

According to this[www.xbox360achievements.org] there are 70 'chievies on Xbox, but on steam, there are only 64 achievements.

Just for reference, here are the six achievements not found in the PC version:

• 50x Combo - Complete a combo of 50 moves (any play mode, any character)
  - Probably should have been included
  
• Catch - Find someone to play remote Batarang catch with
  - throw a remote batarang at the Mystery Watcher Azreal
  
• Gotham Base Jumper - Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground
  - could be fun gliding around Wonder Tower
  
• Forensic Expert - Collect enough evidence to locate the gun for hire
  - kinda pointless since the next immediate step is taking down Deadshot
  
• Distress Flare
  - also pointless, this just starts Bane's quest
  
• Ring Ring
  - again, pointless, starts the Cold Caller quest