Here ya go fellas, I found this on incrysis. This link shows 3,774 commands that we can use in Crysis 2. I think the dev console is enabled by default so you don't have to do the con_restricted command. I hit the tilde key and it popped up. I will also include a pastebin incase you are worried about the site. Someone said it runs a script so here's the pastebin as well as the site.
Original site : http://www.gamerconfig.eu/commands/crysis-2/
Paste bin copy : http://paste2.org/p/1319746
So if these work then I retract my statement in another topic.
EDIT: I have no idea on how to enable the use of them though. Con_restricted is in their but maybe you have to enable dev_mode through a shortcut or something.