"Instructions: Arrow Keys to Move, Down key to heal the balloon"
Really? That's all you need to know when you first play the game?
Instructions Fail 2/5
There should be a way to run away from enemies, or even your best units can be zerged during the opponent's turn and slaughtered before you have a chance to heal or replace them.
It seems silly that there's no point to surviving a fight -- if you're at all injured, the only way to replace damaged parts seems to be dying and respawning.
I's extraordinarily irritating when enemies constantly spawn 4 screens away from you and immediately head straight for you, and you're supposed to escort a weak little newborn across the entire sector. After several attempts of "tanking" incoming shots for it (which were pointless as enemies kept spawning while I was trying to position myself inbetween my charge and oncoming shots) I decided to just boost all the way to the end, which actually did better in keeping the damn thing alive. At least, until I crossed into the sector I was supposed to be bringing it to and it instantly vanished >_<
Oh boy! I get to choose whether to grind xp for 20 minutes to kill the first boss, or kite him around for 20 minutes to get more health once my zero-survival-instinct companions suicide on him!
1/5
Suffers terribly from the same issue as so many other physics "puzzle" games -- you can know exactly what you need to do, and execute it handily, but then get "I'm sorry, but that piece landed on its corner instead of its side and fell somewhere you can't retrieve it" or "you hit the curved surface 2 pixels over from last time, and end up smacking the red thing instead of landing on the ledge you needed to be on" or... (etc).
Excluding a Restart button and basing so much of the game on how the first few levels randomly play out (since your time limit carries across all stages for some stupid reason) both seem like a cheap ploy for inflating the "times played" stat. 0/5 if I could.
I've maxed my infection radius, and yet when I get to the later city levels (around "kill 35" or so) I can only infect one or two people at a time. Very buggy "upgrades".