I'm experiencing several achievements seem to not work - the latest two are "Not Even Remotely Fair" and "Untouchable". I've done both several times, but they are not showing up. I am signed into Galaxy, and launched the game from there.

I have been able to get other achievements through Galaxy, so some of them are working, but some (like mentioned here) aren't triggering for me. What can I do? Or is it something that needs to be patched?

I had no problem with getting the "Untouchable" achievement. It unlocked just fine.

Yeah, I can see that other people have it as well (it sits around 9-10% when I look at the list), so people are definitely getting it. However, I've gotten the "badge" many times now in different levels, but it still isn't unlocking.

Update: Tried quitting the game, quitting Galaxy, reopening Galaxy, reopening the game and doing both achievements again - still none of them working. I simply just beat "Head Cheese" on Duskmare, and obviously also get the Untouchable badge - but neither achievement triggers.

Update 2:
Just defeated "Chomper", and also did not get the achievement for that. I'm getting a feeling that all my achievements (except for the four ones I already got) are just broken? Is there anything I can do here?

Update 3:
This is so weird! Just completed "Crypt of the Flesh" on Duskmare, and now I finally got Untouchable and Not Fair achievements (both in the same go). So arbitrary and random, since I've done both those events on so many other occasions but got nothing, even after restarting Galaxy.
Still didn't get the Chomper achievement though.
The achievements seem to be all over the place!

Otherwise really, really enjoying the game - this is the only sort of "gripe" so far. Hope you guys can fix it!

Oh yeah, and looking at the list of achievements, it's obvious there are many, many more that I should have gotten, but haven't - particularly those for reaching a certain level or beating a certain chapter. For example, I'm almost through chapter 3 (played in chronological order) but the only "progress" achievement I have is Foothills. Seems I'm missing at least:
-Swamped
-Hardcore Parkour
-So I Hear You Like...
-The Facilities

Sooo many achievements not working for me, which is weird because I do see other people are getting them.

For the Chomper achievement you have to use the Crystal of Madness on it, it's not enough to just kill it. The achievement unlocked for me.

Oh cool, didn't know that. Thanks!

Still doesn't explain all the other ones, though. xD
You DO just need to unlock/beat the episodes mentioned (as stated in the achievement description), right? Just making sure I'm not doing anything really basic wrong.

Yes, it's enough to beat the episodes. Strange, they all unlocked for me. I only missing the "True 100%" and "Don't drop it" achievements, but they are bugged (confirmed by the devs).

Yes, exactly - it seems I'm in the minority and that all other achievements except those two are working for just about everyone else, which is why I'm kind of curious if I could have done something wrong or something like that... Though I fail to see what it could have been; I'm logged in, I am launching the game through Galaxy, and I am connected to the internet. That's it. So not sure what triggers it to NOT work?

Hopefully one of the devs can chime in. :)

Yes, I am aware of those two specific achievement issues.

As for the ones that I've reported issues on, I can't say much more than what I have - as an example, I have beat the whole game, but still missing those simple progression achievements (such as "beat episode 2" for example).
If there's anything at all that I can do or give you to make this easier, let me know!