F-Zero GX: Very Hard difficulty (Story Mode) and Master Class (Grand Prix)
Most casual players don't even know that these modes exist, and you unlock these from completing story mode on Hard for Very Hard, and completing 4 out of the five cups on the 3 previous class difficulties for Master Class (hell, some people don't even know that there is a 5th cup) The AI is incredibly aggresive, they have crazy rubberbanding, and mix that with some incredibly difficult and unforgiving tracks, you're going to have a bad time. But you have to do it if you want to unlock ALL of the vehicles, one of which is incredibly high tier, and is pretty much necessary to use if you want to play at a competitive level (don't even get me started on the metagame/speedruns...)
Last edited by Rfifan; Oct 6, 2015 at 03:21 AM.