MOBILE SUIT GUNDAM BATTLE OPERATION 2

1. 
   Welcome to Base Camp

   Complete "Exploring the base camp" training.
   72%
2. 
   Victory Over a Rival

   Defeat a rival.
   29%
3. 
   A Collection Ten Strong

   Acquire 10 MS.
   73%
4. 
   Ten Times Into Battle

   Sortie into battle 10 times.
   23%
5. 
   Promotion: Private First Class

   Get promoted to Private First Class.
   24%
6. 
   Promotion: Lance Corporal

   Get promoted to Lance Corporal.
   16%
7. 
   Promotion: Corporal

   Get promoted to Corporal.
   12%
8. 
   Promotion: Sergeant

   Get promoted to Sergeant.
   8.7%
9. 
   Promotion: Master Sergeant

   Get promoted to Master Sergeant.
   6.6%
10. 
    Increase Rating: D

    Rank up to Rating D.
    17%
11. 
    D+ Rating Rank Up

    Rank up to D+ Rating.
    15%
12. 
    Increase Rating: C-

    Rank up to Rating C-.
    12%
13. 
    Increase Rating: C

    Rank up to Rating C.
    11%
14. 
    C+ Rating Rank Up

    Rank up to C+ Rating.
    9.4%
15. 
    Increase Rating: B-

    Rank up to Rating B-.
    8.6%
16. 
    Increase Rating: B

    Rank up to Rating B.
    7.8%
17. 
    B+ Rating Rank Up

    Rank up to B+ Rating.
    7.0%

Names, descriptions and icons are the game’s own, as Steam publishes them; the share is how many owners have unlocked each, from Steam's global figures for 17 of them.