Medal skills are used to upgrade skills (every 5 levels up). The requirement will increase for every upgrade and promotion.
9 to 10 = 5 skill medals
14 to 15 = 10 skill medals
19 to 20 = 15 skill medals
24 to 25 = 50 skill medals
29 to 30 = 60 skill medals
34 to 35 = 80 skill medals
39 to 40 = 100 skill medals
44 to 45 = 150 skill medals
49 to 50 = 200 skill medals
54 to 55 = 250 skill medals
59 to 60 = 300 skill medals
64 to 65 = 350 skill medals
69 to 75 = 400 skill medals
74 to 75 = 450 skill medals
79 to 80 = 500 skill medals
84 to 85 = 600 skill medals
89 to 90 = 700 skill medals
90 to 95 = 850 skill medals
95 to 100= 1000 skill medals
how many fragments are needed for promotion
5 stars : 450 fragments
4 stars : 250 fragments
3 stars : 150 fragments
2 stars : 100 fragments
1 star : 50 fragments
the walking dead survivors
Legendary skill medal
epic skill medal
rare skill medal
uncommon skill medal