Played through the first rank + 4 levels of the 2nd today (replays and overall critic is comming via pm prob tomorrow) and there are a bunch of really good levels there.
BUT I have a few general things I must shout out (rant incomming and sry for harsh words here, but this has to be said!):
HIDDEN TRAPS + HIDDEN EXIT ACTIVATION BUTTONS + HIDDEN SKILLS HAVE TO BE VISIBLE!!!!!!!!! Some levels were REALLY making me furious because of this stuff! (and it is not very easy getting me into furious berserk mode
)
I ragequitted rank 2 level 5, because of
tons of
invis mines!
And the "guess the right teleporters", "oh there is a hidden pickup skill" and "where is the button in the terrain" games aren't fun either!
Some time limits were not nessesary and sometimes Zombies are just there, but here I have to look again and pm you where they should really go/ reworked.
But these general things you can put on the fix list.
EDIT: One music track is way too loud. I will pm you about this to avoid music track spoilers.