lose_life takes a life with DEC (HL) at $D13F; make it a NOP. The lives shown stay at five from the start, and dying costs nothing. Tested: a death took the lives from 4 to 3 without the poke, and left them at 4 with it.

POKE 53567,0

inc_days ends the game when the day count reaches $40, forty days. Make the comparison $FF, which a BCD count never reaches: the days still pass and are shown, but they never run out. Tested: with the day count set to $39 and run on to the next dawn, the game ended without the poke and carried on with it.

POKE 50210,255

upd_player_bottom checks, every frame, whether anything harmful has touched the player, and starts his death if so. Make its JR Z at $C82F an unconditional JR, and spikes, fire, guards and ghosts pass him by. Tested: flagging the player as touched cost a life without the poke, and nothing with it.

POKE 51247,24

The block type the game calls moveable clears its velocity before it moves, which cancels every push (see the bug). Take out that CALL, at $C4AD: pushed blocks then keep the push, and slide on -- as the chest does -- until something stops them. Tested: a moveable block in the player's path did not move in 20 frames without the poke, and was pushed 47 units with it.

POKE 50349,0: POKE 50350,0: POKE 50351,0