Path of Exile Dev Tracker

Alva's room exploration should get merged into Standard, yes.

Update: we're improving our systems to automatically fix this kind of thing (losing achievements due to changing requirements). We actually do store completed achievements, so we can recover from this type of error.

Even if you stop trying to level Jun now, you should get the achievement again at some point soon.

It's intended.

First of all, achievements "uncompleting" is definitely a bug, and shouldn't be happening. I will look into this.

Regarding the Master decoration levels (and the Forsaken Masters achievement), we intentionally pitched these to not be too difficult, in terms of time-to-grind. This is why you don't need to fully complete anything to reach level 7 for them:

• Zana level 7 only requires you to complete 120/159ish maps on the Atlas.
• Einhar level 7 only requires capturing 160/270ish different monsters in the Bestiary.
• Niko level 7 only requires delving to a depth 200, compared to 600 for the achievement in Delve League.
• Alva level 7 only requires 70/73 rooms explored in the Temple.
• Jun level 7 only requires 50/57 ranks defeated.

For clarity, Alva and Jun are not quite as straight-forward as the others, and worth elaborating on.

For Alva, there are 24 types of rooms each with 3 tiers, plus the Apex. Th...