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