Problem with router ports

[The chaser]

Strange... Canyouseeme.org is a website I used for looking at ports, and, although it detects the "Transmission" ports as opened, it doesn't with Killing Floor... any ideas?

I heard that I had to port forward the killing floor ports, but I don't know how to do that...

BTW, my ISP (Telefonica) provides me with 1 MB (although the contract is of 10, I'm in a town and they already said that I wouldn't get that much), but obviously I'm not getting that MB...

EDIT: As you can see, my internet life isn't as intense as others, I even have to wait for youtube advertisements to load. And we better don't talk about Steam downloading stuff.