Here is the full list of all 13 A-10 VR achievements.
Last for 2 minutes in Timed Mode
Finish Survival Mode with more than 5000 points
Finish Survival Mode with more than 10000 points
Finish Survival Mode with more than 20000 points
Last for 5 minutes in Timed Mode
Last for 10 minutes in Timed Mode
Get a 10x Combo
Get a 20x Combo
Get a 40x Combo
Get a 100x Combo
Finish Attack Mode with more than 5000 points
Finish Attack Mode with more than 10000 points
Finish Attack Mode with more than 20000 points