The fourth challenge for the badge is hard. I managed to do it by making the sword follow the shield and manually positioning the shield. I'm glad that's over with!
This game rocks. The badge is soooo easy on Nightmare mode with devils and friendly fire turned off - just get the rapid fire rocket launcher, run into the zombies and own them. It takes about 3 minutes.
To get the badges you have to end your game, which means losing. So if you want the badges and you have 7000+ on a single run, purposely lose on the next competitor.
I just got the newest badges/cards for this game. Do you need time activated (press 't' ingame) for the time badge to work? Because the first time I used 't' ingame I got the badge, my third or fourth try for the badge. Coincidence?
Anyways, this game is awesome.
It's not that bad of a game, but it would be much better if you only got balls that were of the colours that you needed e.g. when there's only green balls left you still get all the whites, yellows etc.
Exactly like Kyrian said