Gun Specialist, etc.

[Joshua]

I just got Gun Specialist on -7/Factory, in the middle of a run, which was unexpected. I expected it wouldn't be determined until the run was over. Doing it this way means in theory you could get multiple X Specialist achievements in the same run (e.g. if I was to switch to only cannons now and do enough more damage that cannons became 90% of the damage done). It's possible this is intentional but I did find it a bit odd.

[Kyzrati]

Yep this is fine. It's intentionally not set that it's impossible to get multiple specialist achievements, getting another in the same run is just relatively difficult by comparison.

The only run-end achievements are those which can only be confirmed at run's end, otherwise the rule is that you always get the achievement as soon as you earn it (I covered this and other rules in the blog post on achievements).