The Shinden is by far the fastest plane in the game but is also the weakest in terms of Health and Power. Taking a single pink bullet can take away a good chunk of the Shinden's Health Bar. This plane manuvers really well and is great for grabbing medals and powerups but is really tough to beat the bosses with due to the low Power of its main weapon. An offset to this is that is posseses the strongest Missile/Joint Strike strength in the game.
I'd actually recommend not trying to get this achievement in co-op mode unless you have a really strong partner. Co-op is quite a bit more challenging and the Shinden takes a beating as a result. Again, only the host will get this achievement at the end of the game.