Here is the complete game code in TGRK. It ended up being 294 bytes, so I cannot test it on the device. My options for running this game are either A. expand the program size from 127 to 300 bytes, which would make me have to refactor a lot of different things. or B, implement the game in C and have it as a feature on the device. 

Probably going to keep the interpreter as it is and add the game as an extra feature. Either way, it was fun writing this program in TGRK:

EDIT: I Slimmed it way down. Removed the menu system and just have < > and T buttons. The math for damage and monster health calculations had to be slightly slimmed down as well. As well as removing the option to roll to run away. Now during a fight you can just run.

I also removed XP, and changed gold (Stored in R3) as the players damage multiplier. HP is also a damage multiplier.

Simplified Code now fits in exactly 127 Bytes. Will get my serial dongle out tomorrow and drop it on there and see if it works!

* FIGHT *
F7
  FUNC
    CG RND 64 AND CE R8 3 AND CG R1 R7
      R5 R1 DIV 2
      R8 1
      SEP
    CE R8 1
      R6 RND ADD R1 ADD R5 DIV 12
      R2 SUB R6
      R8 0
      SEP
    CE R8 2
      R6 R2 ADD R3 ADD RND DIV 12
      R5 SUB R6
      R8 1
      SEP
    CLE R5 0
      R7 R1
      R3 ADD RND DIV 2
      R8 0
  FUNC

* CONTROLS *
F8
  FUNC
    BG
    L0L
    L1L
    S1
    CE BV 1
      R1 SUB 1
      L0H
      SEP
    CE BV 2
      R1 ADD 1
      R8 3
      L1H
      SEP
    CE BV 3
      L1H
      L0H
      R8 2
      SEP
    CE BV 3 AND CE R1 0
      R2 ADD R3
      R3 0
      BB R3
      SEP
    F7
  FUNC

R2 64

* MAIN LOOP *
CG R2 0 AND CLE R1 126
  F8
  LP

EOP

Original Code:

R2 64

* INN *
F1
  FUNC
    CE R8 0 AND CG R2 0
      R2 ADD R3
      R3 0
      SEP
    CE R8 1
      BB R3
      SEP
    CE R8 2
      BB R2
      SEP
    CE R8 3
      R1 ADD 1
      SEP
  FUNC

* MONSTER ATTACK *
F2
  FUNC
    R6 RND ADD R1 ADD R5 DIV 12
    R2 SUB R6
  FUNC

* PLAYER ATTACK *
F3
  FUNC
    R6 R2 ADD R4 ADD RND DIV 12 ADD 1
    R5 SUB R6
    CLE R5 0
      R7 R1
      R4 ADD R1 DIV 10
      R3 ADD RND ADD R1 DIV 2 ADD 1
  FUNC

* FIGHT MENU *
F4
  FUNC
    CE R8 3
      F2
      SEP
    R8 3
    BG
    CE BV 1 AND CG RND 60
      R1 SUB 1
      R5 0
      R8 0
      SEP
    CE BV 2 AND CG RND 50
      R1 ADD 1
      R5 0
      R8 3
      SEP
    CE BV 3
      F3
      SEP
    CE BV 4
      BB R2
      R8 2
      SEP
    CG R5 0 AND CG R2 0
      LPF
      SEP
    R8 3
  FUNC

* ROAD MENU *
F5
  FUNC
    CE R8 3
      R1 ADD 1
      SEP
    CE R8 0
      R1 SUB 1
      SEP
    CE R8 1
      BB R1
      SEP
    CE R8 2
      BB R2
      SEP
    CG RND 50 AND CG R1 R7
      R5 R1 DIV 2 ADD 1
      F4
  FUNC

* MENU LED *
F6
  FUNC
    CE R8 0
      L0L
      L1L
      SEP
    CE R8 1
      L0H
      L1L
      SEP
    CE R8 2
      L0L
      L1H
      SEP
    CE R8 3
      L0H
      L0H
  FUNC

* BUTTON INPUT *
F7
  FUNC
    BG
    CE BV 1 AND CG F8 0
      F8 SUB 1
      F6
      SEP
    CE BV 2 AND CL F8 3
      F8 ADD 1
      F6
      SEP
    CE BV 3 AND CE F1 0
      F6
      F1
      SEP
    CE BV 3 AND CG F1 0
      F6
      F5
  FUNC

* GAME LOOP *
F8
  FUNC
    CG R2 0 AND CLE R1 126
      F7
      LP
      SEP
    CE R1 127
      L1L L0H S1
      L0L L1H S1
      LP
      SEP
    L1H L0H S1
    L1L L0L S1
    LP
  FUNC

EOP