I really like the storyline, driven completely by gameplay which made it way more rewarding. I like how the introduction of new concepts wasn't narrated but just gradual enough that you could figure it out easily.
the game wouldn't be so annoying hard if there wasn't a 3 second delay from selecting a weapon to when it actually switches, the "death duck" is near useless since switching to deploy it you have to wait forever before it fires.
Hard Badge was pretty easy, best thing is to complete a maze with Basic towers but leave enough space for a solid trail of Electric Floor blocks on the creeper trail, put your first Machine Gun in a central location and then throw an electric floor in front of him (pretty much doubles his effectiveness) I didn't build Boss towers till I had 3 lines of fully upgraded machine guns. I beat 50 on hard without losing a life doing this, no money machines used.
Easiest way to get the Runner Hard badge is to max your Spread gun and your Character stats, best way to get the Boss run badge I found is to max your missile gun.
I gave it 1 star for the game being so stupid that it was no hot key to select all my units , I'd have one level 10 in 2 seconds if the game interface wasnt so terrible.
I've played through the game as max fighter, max BFT, and max heavy. and must say the max tank with the giant canon and the SIX auto turrets and 3 big guns is the best tank , I feel like the max fighter was ok but nothing special. I still need to try the leecher.
Wow I kept looking at my score over and over again and it wasn't until I just lost myself in the zone till I got 7k in a single run. I was in the zone.