Passwords
Core's pre-Tomb Raider blaster is pretty tough. If you're stuck type these in the password screen to reach any level of the game:

1.2	Q58NM - LDZCQ - 4HWGE
1.3	TDM75 - UH8OT - X06BE
1.4	VO1PP - JCP6V - H4ULJ
2.1	0F20F - 0HX8Y - OE95W
2.2	42W3T - JGK-P - 5K5H7
2.3	VR4T2 - 6EZD5 - SHCMM
2.4	1NBCX - CXVI6 - PA3K1
2.5	ZF0XD - Y5KXJ - Q2NGZ
3.1	2XVSD - AHO3J - S2MF
3.2	W0J8H - 3Y8-D - -7FRU
3.3	THYDH - 0MZDU - 3CZFK
3.4	1SOJ3 - 130BP - V2MW8
4.1	YCTS6 - PUUKS - 28SD1
4.2	Q29LH - UDUY4 - 21FSD
4.3	WS7Y6 - HQPIW - BOFGK
4.4	2RHK4 - RB9RU - Z1IT2
END	UP405 - C42R1 - 2MP3P