In the regular "map", once you complete enough levels in [#+], you unlock the "credits level", symbolized by a flag. In the [!] "map", once you complete enough levels in [#+!], you unlock a similar level, also symbolized by a flag. Is there such a level in the [!!] map?...

I've unlocked +', but there's a lot of unlocks blocking in single letter primes (like say M') and I can't figure out how I unlock those letters. I've got !, and even !! unlocked, all the combos from 5-8, but still no single letter primes, and no unlocks that point to them. How?...

I think they are 2 new achievements: #' and #' (10 levels in 8x8) How can I fix this? (I've seen that 0% of people has these achievements)

the situation is happened many times and really blocked my path to full achievement

It said: Mines must be a part of row of three orthogonality or diagonally. I got a setup that goes against the rules. It's false advertising.