SSX
50 Achievements
1,000
30-35h
I Ain't Afraid of Snow Ghost
Beat a Friend's Rival Ghost in every Range (in Explore)
10
How to unlock the I Ain't Afraid of Snow Ghost achievement in SSX - Definitive Guide
If you have no friends then you should start to do some Global Events and adding people with around the same scores as you and then attempting to beat their scores or post a forum post on TrueAchievements.
If you have a friend that is willing to do it you can simply load up a Deadly Descent in each area and kill yourself, then they kill themselves right after your record. Then you go back through and beat their score.
Here is a checklist if needed:
Himalayas
Africa
Antarctica
New Zealand
Siberia
Alaska
Rockies
Patagonia
Alps
GT: xRori
You can use your free account to race on all the first track, shortest trick events (just race to the bottom as fast as you can, without doing any tricks). Once you've completed one on each range, exit the game and then log in to your primary account. Head to each range and beat the extremely easy trick score, and then you've unlocked the achievement!
Any track will work (including Deadly Descent, as suggested above), but using the shortest trick it track doesn't require getting enough money on the free account to unlock the tracks.
Just make sure you friend the other account (it can't be a local profile only), because it has to show up in your SSX rivals list.
In Explore mode, a Rival Ghost is a record any friend has set that is over your best for that run. If you have not completed an event, then it is the lowest record any friend holds. If none of your friends have played a run, there is no Rival. To pop this trophy you must beat a friend's ghost on each of the nine ranges. An easy way to tell if you have beaten your rival is in the Drop Bonus section of the post-race screen, you should see a PSN icon among the earned badges. If you have Mount Fuji in Japan, it does not count for this trophy.
It is possible to boost this trophy by having a friend set an extremely low record on any run, and beating their record. Survive events are perfect for this as they can be found on every range and are extremely easy to die, ensuring a low record. If you need friends who play SSX, see Co-op Partners Thread - Friends/Rivals (Read First Post!)