Aliens vs. Predator

Firstly: You must have the AvP save-game patch installed.

Secondly: Add -lampcxtr -debug to the command line.
ie: "C:\Fox\Aliens Versus Predator" -lampcxtr -debug
Then when in the mission press the tilde (~) key to bring down the console and then you can type the following codes:

"QUICKSAVE"/"QUICKLOAD" which always save/load to/from the first save slot.
"SAVE #"/"LOAD #" (# is a number from 1-8) which save/load to/from slot number #. "SAVESLEFT" displays how many saves the player has remaining in the current level at the current difficulty. This number is also displayed any time a game is saved or loaded.

Advanced users may now access some of the game's internal debugging commands (which include features such as immortality) by running the game with the command line option "-debug" (e.g. "AVP.exe -debug").

In this mode Multiplayer is not available, levels will not be flagged as completed, and no new official cheat modes will become available. This basically means that players can examine a level to which they already have access with invulnerability, infinite weapons, etc. but can't open up any new game levels or features.

The following CONSOLE COMMANDS are made available by this option, in-game help is available by typing in "LISTCMD" at the console:

"GOD" - makes the player immortal: player will still take damage, but will not die when they reach zero health.
"GIVEALLWEAPONS" - self-explanatory.
"SHOWFPS" - displays the current frame-rate per second on-screen.
"SHOWPOLYCOUNT" - displays the number of rendered polygons per frame on-screen.
"LIGHT" - creates a light source near the player. Repeated use makes a brighter and brighter light.
"GIMME_CHARGE" - Full Energy for Predator

Bot console commands:

"ALIENBOT" - creates an Alien in front of the player.
"MARINEBOT #" - creates a Marine (or civilian) of type #.
"PREDOBOT #" - creates a Predator of type #.
"PREDALIENBOT" - creates a Predator-Alien.
"PRAETORIANBOT" - creates a Praetorian Alien.
"XENOBORG" - creates a Xenoborg.

Note: creating bots may cause crashes and unexpected game behavior. For a bot to be created its model must exist in the current level; however, the models may be forced to be loaded through a command line option. Add "-l" followed by a list of letters corresponding to the characters you want to load:

The following CONSOLE VARIABLES are made available (replace the # sign with a number), in-game help is available by typing the "LISTVAR" command at the console:

"MOTIONTRACKERSPEED" - allows the player to speed up/slow down the pulse rate of the Marine's motion tracker (range from 0-16, default is 1).
"TIMESCALE #" - change the rate at which time flows in the game, e.g. "TIMESCALE 0.5" will make time pass at half the normal speed. For those interested, the "JohnWooMode" cheat uses this effect dynamically, so that time passes slower the more action is happening on screen.
"WIREFRAMEMODE #" - display the environment and/or characters using wireframe graphics.
"DOPPLERSHIFT #" - enable/disable the Doppler shifting on the Alien player's sounds.
"SKY_RED #" - change the red component in a sky.
"SKY_GREEN #" - change the green component in a sky.
"SKY_BLUE #" - change the blue component in a sky.
"LEANSCALE #" - change the amount the camera tilts when side-stepping.

Start a new game under the easy difficulty setting. Press ~ to display the console. Then, type RIPLEY_WAS_HERE.

The following CONSOLE VARIABLES are made available (replace the # sign with a number), in-game help is available by typing the "LISTVAR" command at the console:

"MOTIONTRACKERVOLUME" - this is set at its maximum of 1.0 by default, the volume of the tracker can be reduced by changing this number (e.g. to 0.75 or0.5).
"CROUCHMODE" - this new console command allows players to change the Aliens crouch/crawl to a toggle on/off key by typing "CROUCHMODE 1" at the console. "CROUCHMODE 0" changes back to the default setting.

Complete each requirement to receive the achievements