No wonder this is so little played compared to the previous ones. People come to these games looking for some good fun, not this frustrating thing. Way too many enemies, and all of them shoots projectiles that kill you in 1 hit and each of them take so many hits to die. It's just not fun.
A little too easy that, after a while, it becomes repetitive. There is almost always a grid that is obviously the correct answer (if you find it), so not many logical deductions are needed, as in: there are 2 positions that you can shade, however one of them will eventually lead to an unsolvable puzzle, therefore the other position is correct.
I say almost because I remember one puzzle in which such a method was employed, I believe it's the third to last, although it is possible that it's actually an error on my part.
 "Myosotis Chapter 1"){kind=icon}
 "Robot Wants Fishy"){kind=icon}
 "Picma Squared"){kind=icon}
 "Seventh Sky"){kind=icon}