Here is the full list of all 35 Rugby Challenge 2 achievements.
Score 4 consecutive tries with Jonah Lomu vs. England
Score a drop goal with a prop or hooker
Score a penalty, conversion or drop goal which bounces in off the goalpost or crossbar
Grubber kick the ball between the goalposts during a match
Watch through the credits
Win 60% of lineouts in a match that aren't thrown by your team
Score a conversion on pro difficulty
Make a try-scoring run which starts within your own in-goal area
Break through a fullback with Jonah Lomu
Win 10 matches, each as a different team
Take a quick lineout
Maintain over 80% possession in a match
Win every match as the Lions on tour
Maintain over 80% territory in a match
Win the World Championship competition without losing or drawing a match
Create and save a custom player
Complete career mode
Successfully hire a player rated 80 or higher for your club in career mode
Win the Pro D2 competition
Win the Quad Nations competition
Win the RaboDirect PRO12 competition
Win the Top 14 competition
Win the ITM Cup competition
Win the AVIVA Premiership competition
Win the Rugby 15 competition
Use a shortened lineout
Use a number 8 pickup at a scrum
Score a try within the first 5 minutes on the game clock
Do not concede any penalties in a match
Use the send runner strategy to gain more than 5 meters past the ruck
Successfully steal the ball at a breakdown before the ruck forms
Get gold medals in every tutorial
Complete an online match
The ref calls a yellow or red card against you
Intercept a pass and score with that player