Even to this day, if I replay the game that Metroid Prime tends to beat me if I drop my guard while playing. But if we compare it to the Ing Emperor, man I could beat that boss again and again while eating nachosEchoes was definitely easy in comparison to the first game. The Omega Space Pirate and Metroid Prime itself gave me troubles in MP. Metal Ridley was a tricky bugger, too. There were no such challenges in Echoes.
Metroid Prime 3: Corruption is on the same level as the second game in terms of difficulty. Getting used to the controls is probably the trickiest part of the game...
