Keep your aim steady. Whether you are camping with the Sniper (egg-kun) or rushing with the Scrambler, the proxy is your shield. The firewall is your enemy. Now go out there and crack some shells. Have a proxy site that isn't listed? Share it in the comments below (just don't get it blocked!).
To the network firewall, you aren't playing a game. You are just visiting a harmless proxy site (which looks like a search engine or a blog). This is the magic. Shell Shockers Unblocked Proxy Sites
Enter the solution: