Halo: Reach: Find the hidden binary signature.
Pop 30 balloons in Practice Mode
Hit a serve at 200km/h (124.3mph) or faster
Halo CE: Play Halo: CE on the 15th of any month.
Halo CE: Beat the par time on The Pillar of Autumn.
Kill 100 Grunts.
Halo CE: Complete The Pillar of Autumn.
Kill 100 enemies or players.
Halo CE: Fight alongside Chips Dubbo and listen to his words of wisdom.
Get 25 Clean Racing Skills in any A Class Car.
Arrive at the Horizon Festival.
Unlock 100 Driver Gear suits
Unlock 50 Driver Gear suits
Unlock 25 Driver Gear suits
Unlock 10 Driver Gear suits
Reached Car Collector Tier 3
Collected 100 cars
Reached Car Collector Tier 4
Reached Car Collector Tier 2
Complete a campaign mission or a match of multiplayer.
Play a downloaded song.
You gotta start somewhere. You've raced in your first DiRT Tour race.
Discover Way of White covenant.
Arrive in Lordran.
Acquire Estus Flask.
Light bonfire flame.
Use a special move
Continue playing to unlock this secret achievement.
Complete the tutorial
Collect all Alien Artifacts.
Defeat the Moon.
Complete the game on any difficulty setting.
Reach the Alien Machine.
Kill 5 Cysts in the Biology Building with a single poison gas cloud.
Dissolve 50 enemies with acid.
Find Peng.
Kill 10 alien Necromorphs.
Kill a Soldier by TK'ing a grenade or rocket back at them.
Kill 30 enemies with explosion damage.
Kill 30 Soldiers with head shots.
Reassemble Rosetta.
Kill 30 enemies using an electrified Ripper blade.
Dismember 500 limbs from living enemies.
Kill 50 enemies while they are in stasis.
Fully upgrade your RIG.
Kill the Snowbeast.
Defeat the Hive Mind.
Successfully deploy Scavenger Bots to 15 Resource Areas.
Create a Blueprint that needs at least 2000 resources worth of parts and Circuits to build.