POKE 25445,0

This removes the command;

DEC (HL)

Which is used to decrease the player life counter held at 24125.

POKE 27975,24

This changes the command;

JR NZ,27990

To just;

JR 27990

This removes the condition for the jump command completely, so will always just continue with execution.

POKE 27996,0

POKE 26662,201

This alters the command which returns when there's been a collision from;

RET NC

To just;

RET

POKE 28655,201

This alters the command which returns when there's been a collision from;

RET NC

To just;

RET

POKE 28610,0

This removes the command;

DEC HL

NOTE: The obstacles are still present! They're just not printed to the screen.

POKE 27397,0

This changes the counter from;

LD HL,0280

To;

LD HL,0024