Here is the full list of all 12 KrissX achievements worth 200 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Xbox 360.
Earn all the Badges.
Progress to Stage 50 in Quest Mode.
Complete all the words in a puzzle with a Wildfire Bonus.
Unlock Timeless Mode.
Score a 10,000+ point combo.
Complete 2 words with a Wildfire Bonus.
Earn the first Ultimate Badge.
Complete 3 words in a puzzle with Cascade Bonuses.
Complete a puzzle with less than 1 second on the clock!
Unlock Time Attack Mode.
Earn the first Platinum Badge.
Earn the first Gold Badge.