The latest Halo 4 Champions Bundle due for release this August will come with a list of new achievements. They are as follows -


Shocking
In Bullseye DLC matchmaking, activate both electrical surge systems during a match on Vertigo.
10 points
Got it!
In Bullseye DLC matchmaking, acquire the Rocket Launcher at the start of a match on Pitfall.
20 points
Protect This House
In matchmaking, assassinate the ball carrier within five meters of your own goal in Ricochet.
30 points
Hat Trick
In matchmaking, score three times in one round of Ricochet.
33 points
From Downtown
In matchmaking, score by throwing the ball from 30 meters in Ricochet.
25 points
Can’t Catch Me
In matchmaking, score a goal in Ricochet while taking damage with the Resistor active.
25 points
Just a Scratch
In matchmaking, recover full shields from low health with both Resistor and Recharge active.
20 points
Pitchin' a Tent
In matchmaking, effectively camp one location without dying for a full 60 seconds.
20 points
One-Man Army
In matchmaking, get four consecutive kills with the Rocket Launcher without dying.
40 points
Repeat Survivor
In matchmaking, survive three vehicle explosions in a row with the Survivor package.
27 points