Frankly, I find Kingdom Rush a bit better game overall, as there are several things I dislike about KR Frontiers compared to KR. I think that heroes were better managed in KR, but what I really struggle with is the concept of burrowing and invisible creatures. They're extremely annoying an sometimes it's only about a pure luck if you get them or not. Any hints on how to reliably stop them? Even double or triple garrison are sometimes not enough and one succker always slips through unnoticed, namely the invisible guys.
Still 5/5 stars, but these things bother me.
Cheers!
I find the assasins with their steeling ability extremely helpful. The amount of money they bring is noticeable, and they don't suck at defense, so I really recommend them w/e possible.
When in cinematic mode, the winow is too low, it could be a bit higher so that it's more in the optical centre. This way the whole screen "falls" to the bottom. Other than that: amazing game.