Easy victory:

Simply take over the opposition's team. Play all the players on the wing, which results in your team getting a big win.

Buy FGN players that have European Passports:

In the player and staff search screen, click on "Player Search". Then, specify "EU National" under filters. While you are in there type in, after the "Text" filter, a country or continent outside the EU. This will allow you buy to foreign players that have EU passports such as Alexander Mostovoi (who is Russian/Portuguese).

Opponent has no players:

Choose a rival team that you do not like. Add manager, then free transfer all their players. Instead of clicking "Continue", retire immediately. None of the free transfers will be blocked, leaving them with no players.

Player to buy:

Raul Diaz Arce of DC United

Become national coach:

Select country you want to be on the Select League page, then make yourself that nationality. When it comes up with all the clubs you can choose from, click on the bit which has the nation of the club, then go to the top right side of the screen and Take Control