Metal Marines Level Codes
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Level 1         PNTM
Level 2         HBBT
Level 3         PCRC
Level 4         NWTN
Level 5         LSMD
Level 6         CLST
Level 7         JPTR
Level 8         NBLR
Level 9         PRSC
Level 10        PHTN
Level 11        TRNS
Level 12        RNSN
Level 13        ZDCP
Level 14        FKDV
Level 15        YSHM
Level 16        CLPD
Level 17        LNVV
Level 18        JFMR
Level 19        JCRY
Level 20        KNLB