Won the league first season on FM10 with Inter. Was unbeaten until the last day of the season, had the Champions League final about 4 days later. Rested players for it (was against Napoli btw), got beat 3-1, was absoulutely gutted. Champions League win sort of made up for it.I wouldn't say it's that hard. I remember I was playing a network game with my friends I was Arsenal, was doing pretty bad in the league at first and I always start my games with low rep so the pressure was on, ended up 3rd and I won the CL.
The hardest thing ever in this game is have an unbeaten season, I have actually never done it. Closest I've come is 1 loss.