User blog comment:Cosmobo/Badges For Adventures From The Deep Blue Sea./@comment-27748746-20160824065156

The last one is not possble I believe.

I have owned a wiki before and the achievements (I believe?) go 1, (5?), 10, 25, 50, 100, (500?), 1000, and then by every 1000 repeats the same achievement.

i don't know about 5 and 500 being there but i think so