There are few enemies in the MGS franchise with a name as stupid as Fatman (especially as Kojima cut a character from MGS 2 called "Chinaman"), but his boss fight is easily one of the most inventive and enjoyable in the second game, as the wine-sloshing maniacal bomber rides around on roller-skates, planting bombs on the heliport which Raiden has to use a coolant to diffuse. On one hand, there's a ton of added pressure to this mission because each bomb has a time limit in which it needs to be neutralised, though Fatman isn't particularly devious about hiding them, so that helps. He's also a terrible shot, firing wide and blind, while whenever you manage to knock him down, a well-placed headshot will take off a huge chunk of his health. Though not hugely challenging, this one's a ton of fun and just the right side of stressful.