Ah, yes, that brings us to the main game. When listening to the criticisms of the previous games, the developers clearly paid attention for a short while but soon got distracted and started doodling yet more rubbish sidekicks to add to our lives. In some ways it's improved - the too-long level length of the original Sonic Rush has been halved, as an example - but by the time you reach the third level, you realise that it's largely business as usual, and business is killing you in one hit.
Sonic Rush Adventure uses its dual-screen display as an excuse to repeatedly punch you in the back of your head. Unseen death rains down on you from above, and it's impossible to see it coming on your first play. It's a similar story down yonder; bottomless pits are plentiful, and in a game that's structured as vertically as Adventure is, there's simply no excuse for them to be there.