By doing special things. NO CHEATS! If you use cheats you will not get the achievements. If you don't know what you are looking for you can go to the game on your dash board and check what achievements there are to still get.
http://www.xbox360achievements.org/game/saints-row-2/achievements/ You should also go to the site for other game achievement information and achievement guides.
don't use cheatcodes and you will get achievements
Yes, Saints Row 3 has achievements/trophies.
You can't!
No.
You can't get any achievements/trophies if you've activated a cheat, even if you deactivate it.
unfortunately it doesnt have trophies, but no doubt that 360 users will be able to have achievements for it!
They removed them from Saints Row 3. You can only get them in Saints Row 1 and Saints Row 2
There are five currently, Saints Row, Saints Row 2, Saints Row: The Third, Saints Row IV, and Gat out of Hell.
The cheat to get a ar40 on Saints Row 2
YES, There is so much more to do and if you want to have fun, look up some cheats, but if you have cheats enabled, then you can't earn achievements or trophies.
If you enable or activate cheats on saints row 2 and save achievements/trophys cannot be earned. If you dont save while you activated cheats then nothing happens.