BattleTanx Cheats (GameBoy Color)

Level 2: M1A1, W, K, 3, Y
  Level 3: R, W, H, M1A1, Z
  Level 4: R, M1A1, K, X, S
  Level 5: 7, W, M1A1, L, W
  Level 6: 8, Moto, J, 5, 9
  Level 7: 7, Moto, G, H, 4
  Level 8: K, Moto, 9, N, 8
  Level 9: Moto, V, R, Moto, F
  Level 10: X, Z, Q, M, T
  Level 11: W, Z, 6, R, Q
  Level 12: V, Z, Q, N, L
  Level 13: C, Z, 9, R, 9
  Level 14: F, Z, S, V, 5
  Level 15:  D, X, 6, Z, 6