Removes the instruction which would otherwise decrease ActivePlayer_Lives.

36962	LD A,(24225)
36965	DEC A
36966	LD (24225),A

To:

36962	LD A,(24225)
36965	NOP
36966	LD (24225),A

This changes the starting lives from 4 (1UP) and 5 (2UP) to 255. The 2UP value is one higher than 1UP because of how ChangePlayer copies the inactive player.

43092	LD A,4
43094	LD (24225),A

43116	LD A,5
43118	LD (24229),A

To:

43092	LD A,255
43094	LD (24225),A

43116	LD A,255
43118	LD (24229),A

Removes the subtract which would otherwise take the spent fuel off FuelLevel_1.

36260	LD HL,(24718)
36268	SBC HL,BC

To:

36260	LD HL,(24718)
36268	NOP
36269	NOP

TickThenExplode_TestHeight is the height test used before an actor explodes on Jetman.

45776	JP P,45781
45779	NEG
45781	CP E
45782	RET

To:

45776	JP 45781
45781	AND A
45782	RET

The first poke always jumps to TickThenExplode_Compare. The second clears carry, so the following RET never comes back with carry set.

Turns the type check into an unconditional skip, so *IX+23 is never decreased and Handler_Missile_ConvertExploding is never called from here.

43992	LD A,(24696)
43995	CP 129
43997	JR Z,44005
43999	DEC (IX+23)

To:

43992	LD A,(24696)
43995	CP 129
43997	JR 44005

Turns the delay check in SpawnAlien into an immediate return, so a new alien is never copied into a free slot.

37995	LD A,(24167)
37998	AND A
37999	RET NZ

To:

37995	LD A,(24167)
37998	AND A
37999	RET

Treats the missile as destroyed as soon as one hit is taken off *IX+22.

44903	DEC (IX+22)
44906	JR Z,44977

To:

44903	DEC (IX+22)
44906	JR 44977