» Wed Aug 18, 2010 1:57 pm
I've known this for about a week, maybe more. Though they are invisible to everyone except the Operative, when you step on it you can see it. Also, if you buy the mine ability, in rank 4 (which is like level 17 or something) you can buy the ability to have 1 extra mine. So that engineer can place 2 and if you get rescued from the first, he can still kill you with the second.