Redeem codes never had names.
Spiral Knights happened in 2011.
Spiral Knights was created in 2011.
Each code is unique and can only be used once each. Furthermore, those codes would have expired by now. They were handed out to PAX members who played Spiral Knights.
No.
You need an Autogun first. Search that on the Spiral Knights wiki, then follow the steps from there.
Trading
to shout in spiral knights, you press /shout then u type your message. for example. /shout selling blue shards for 15cr each
Yes
u have to get a sertain achevment in spiral knights and u get the hat i have it so i know
There are no Cheat codes. If you're talking about the 'Redeem Code' option, that's for Codes given to players for certain items, like the PAX bombhead mask back during that promotion. Otherwise, the function serves no other use. Certainly NOT for cheats.
Try asking the GMs/developers of spiral Knights, either by choosing an option from the Spiral Knights support portal (see Sources and Related Links further down this page) or by checking the 'Technical issues' Section of the forums to see if your problem is there.