Metal Slug XX

1. 
   Worm Mecha 4

   Finish Mission 1 by going through the regular route (Main Mission).
2. 
   Hunters Hideout 5

   Finish Mission 1 by going through the Hunters Hideout route (Main Mission).
3. 
   Crablops I 5

   Finish Mission 2 (Main Mission).
4. 
   Crablops II 5

   Finish Mission 3 (Main Mission).
5. 
   Gorilla Mecha 5

   Finish Mission 4 (Main Mission).
6. 
   The Union 5

   Finish Mission 5 by going through the regular route (Main Mission).
7. 
   Deeper Ruins 5

   Finish Mission 5 by going through the Deeper Ruins route (Main Mission).
8. 
   Mars Hallway 5

   Finish Mission 5 by going through the Mars Hallway route (Main Mission).
9. 
   Rebel Gigant 5

   Finish Mission 6 (Main Mission).
10. 
    Marco Rossi 25

    Beat the entire game as Marco on Normal difficulty (Main Mission, one session).
11. 
    Tarma Roving 25

    Beat the entire game as Tarma on Normal difficulty (Main Mission, one session).
12. 
    Eri Kasamoto 25

    Beat the entire game as Eri on Normal difficulty (Main Mission, one session).
13. 
    Fiolina Germi 25

    Beat the entire game as Fio on Normal difficulty (Main Mission, one session).
14. 
    Ralf Jones 25

    Beat the entire game as Ralf on Normal difficulty (Main Mission, one session).
15. 
    Clark Still 25

    Beat the entire game as Clark on Normal difficulty (Main Mission, one session).
16. 
    Leona Heidern 25

    Beat the entire game as Leona on Normal difficulty (Main Mission, one session).
17. 
    The Big T 1

    Get Thunder Shot.
18. 
    Moon Slasher 10

    Finish any mission as Leona without shooting, no use of bombs and no vehicles (Main Mission).
19. 
    SV-100 5

    Finish Mission 1 with a SV-100 (Main Mission).
20. 
    Slug Trolley 5

    Finish Mission 2 with a Slug Trolley (Main Mission).
21. 
    Slugnoid 5

    Finish Mission 3 with a Slugnoid (Main Mission).
22. 
    PVT. Morse 10

    Reach 100% recaptured POWs on Mission 1.
23. 
    SGT. Yang 10

    Reach 100% recaptured POWs on Mission 2.
24. 
    SGM. Metastasio 10

    Reach 100% recaptured POWs on Mission 3.
25. 
    WO1. Noma 10

    Reach 100% recaptured POWs on Mission 4.
26. 
    LCL. Campanella 10

    Reach 100% recaptured POWs on Mission 5.
27. 
    PVT. Madoka A. 10

    Reach 100% recaptured POWs on Mission 6.
28. 
    2LT. Hyakutaro 10

    Reach 100% recaptured POWs on Mission 7.
29. 
    Platoon Seargent 5

    Reach 2000 rank points on Combat School.
30. 
    Second Lieutenant 5

    Reach 4400 rank points on Combat School.
31. 
    Lieutenant Colonel 5

    Reach 6400 rank points on Combat School.
32. 
    Lieutenant General 10

    Reach 8400 rank points on Combat School.
33. 
    Super Devil 25

    Reach 10000 rank points on Combat School.
34. 
    Scrap Island 100% 25

    Complete all Mission 1 challenges on Combat School.
35. 
    Coal Mines 100% 25

    Complete all Mission 2 challenges on Combat School.
36. 
    Underground Fortress 100% 25

    Complete all Mission 3 challenges on Combat School.
37. 
    The Waterfall 100% 25

    Complete all Mission 4 challenges on Combat School.
38. 
    Ruins Base 100% 25

    Complete all Mission 5 challenges on Combat School.
39. 
    Snowy Country 100% 25

    Complete all Mission 6 challenges on Combat School.
40. 
    The Beginning is the End 100% 25

    Complete all Mission 7 challenges on Combat School.
41. 
    Scrap Island 200% 50

    Achieve Rank S on all Mission 1 challenges on Combat School.
42. 
    Coal Mines 200% 50

    Achieve Rank S on all Mission 2 challenges on Combat School.
43. 
    Underground Fortress 200% 50

    Achieve Rank S on all Mission 3 challenges on Combat School.
44. 
    The Waterfall 200% 50

    Achieve Rank S on all Mission 4 challenges on Combat School.
45. 
    Ruins Base 200% 50

    Achieve Rank S on all Mission 5 challenges on Combat School.
46. 
    Snowy Country 200% 50

    Achieve Rank S on all Mission 6 challenges on Combat School.
47. 
    The Beginning is the End 200% 50

    Achieve Rank S on all Mission 7 challenges on Combat School.
48. 
    Score Hunter 25

    Reach 15 million score on Main Mission.
49. 
    The Beginning is the End 25

    Beat the entire game on Hard difficulty (Main Mission, one session).
50. 
    Fast Future 25

    Beat the entire game within 35 minutes on Normal Difficulty (Main Mission, one session).
51. 
    Double X 50

    Beat the entire game without using a continue on Normal Difficulty (Main Mission, one session).
52. 
    XXtreme Survival 100

    Finish Survival Mode on Combat School.

Achievement names, descriptions and badges are the work of the RetroAchievements community. View this set on RetroAchievements