Instead of paying coins to open a chest, how about a wheel that we can spin for more variety. It would have spot's for head, body, weapon, and then you could have a spot to spin again with increased odds for U,R,E,L items. Maybe add in spots for coin or exp multiplier's? You could also make a spot that gives you a ticket and have different chests that you can open depending on how many you save.
Playing on Firefox and got to stage 16. To pass the stage, I copied the link from the web page and then opened a new window. Then i just right clicked the address bar and selected paste and go. Gate opened for me, just had to reconnect to the chat.
Great game. I really enjoyed playing. For the sweep star badge, I got it on the level Sweep This! I just took my time early on while it was easy marking every mine and letting zombies walk into them. In the narrow areas when lots of zombies spawned i found it better to backtrack to a more open area and most of the time a few of the zombies would walk into the mines connected to the open area and gave me .more room to run and not get bottle necked as much. This is now on my favorites.