how to get hard badge: buy after day 4 research artillery to kill those monsters move your mouse up and down with the rusty nail to kill the balloons dont buy ANYTHING except the repairs, i made it after level 11!!!!
Well... It's not bad but the lettertype is a bit annoying, so I thought the V was an U and I thought the I was an L! 3/5 For annoying lettertype. You'll get higher if you change it.