Nebulaphile

The extremely foggy levels this achievement is saying are Levels 4-2, 4-3, 4-4, 4-7, 4-8, and 4-9.

Strategy
To get it, you should pick the following:


 * Sun-shroom
 * Puff-shroom
 * Scaredy-shroom
 * Wall-nut
 * Gloom-shroom (with Fume-shroom, of course).
 * Garlic

As the achievement states, you can't use the fog removers. It isn't very different like the pool level from the day. Gloom-shrooms are cheaper than Threepeaters, so they should be used.

Trivia

 * This is the eqivalent of the iPod Touch/iPad/iPhone achievement Blind Faith.
 * "Nebulaphile" (though it isn't a real word, it literally means "fog/cloud lover") might be derived from "Nebulaphobia", which is the fear on fog.
 * Unlike Blind Faith, you can't use Torchwoods to in order obtain this.