This section will cover the most notable cheats. All cheats are entered in-game, unpaused, by typing out the code on your keyboard. If your character is reacting to button inputs while entering the code it means you messed it up at some point. You don't have to type fast to have them work, so take your time. Codes are in all caps to help readability, but can be typed regularly. To disable toggle cheats, simply load a save, restart the level or re-enter the code.

OLIMYELLA - Full Invincibility Toggle
Grants you full invincibility and infinite stamina.

OLPOSTAL - Weapons Added
Bestows you with the game's entire arsenal filled to the brim with ammunition. To move while wielding the Gatling Gun, enter the cheat below.

OLSTINNETT - Let's Go... -Pike
Allows you to run around while wielding the Gatling Gun.

OLASH - Bottomless Bowl-O-Ammo Toggle
Sets ammo count of everything to 999. Ammo doesn't decrease and you don't need to reload.

OLJACKPOT - Inventory Added
Gives you all the key inventory items in the stage. Does not give Medical Bags or the Pen (optional item in level 2).

OLAIRHEAD - Fly Mode Toggle
Toggles flight. The "Jump" key makes you move upward and "Crouch" downwards. It controls a bit weird, but gets the job done.

OLSHADOWS - Jetpack Toggle!
Hold down the "Jump" key to ascend and let go to descend. Be wary of fall damage.

OLGUSHER - Unlimited Oil Toggle
Using the Lamp won't use any Oil.

OLWIMPY - Wimpy, Wimpy, Wimpy!
Fully reloads your weapon instantly when the last round is fired, provided there is ammo.

OLCDS - Super Map Mode Toggle
Fully reveals the map, with unexplored walls shown as light gray. Every sprite is displayed as a separate color-coded triangle on the map, with the triangle showing their angle. Useful for finding stray enemies or item pickups.

• Enemies are gray
  
• Neutral entities (NPCs, decorations) are black
  
• Items and the player are pink

OLER
Fully restores your health.

OLMORERX
Restores up to 3 hearts of health.

OLRX
Restores a single heart of health.

OLOPEC - Oil Added
Fills your lamp oil reserve by 40%, which is 60 seconds (max capacity is 150 seconds).

OLETHER - Cloaking...
Similar to Doom's "Partial Invisibility", gives you a temporary cloak. Largely useless as the effect is designed for an item that only appears in multiplayer. The AI will not behave any differently.

OLZIP - Teleport Failed
While the map view is active, type this code to enable it. After this, every time you access the map view, the game will save your current location as the teleport marker (not visible). Typing the cheat again outside of the map view will warp you to the marker. If the saved coordinates wouldn't be valid in the current level, it will fail to warp you. It's not a very useful cheat because it restricts your map usage if you want to keep a specific warp point.

OLSCREENING
Plays every single cutscene back-to-back. Sends you to the Main Menu afterwards.

OLHITME
Damages you for a single heart of health. This cheat can kill you. Does not work if the Invincibility cheat (OLIMYELLA) is active.

OLREALLYHITME
Damages you for 3 hearts of health. This cheat can kill you. Does not work if the Invincibility cheat (OLIMYELLA) is active.

OLTOMBSTONE
This cheat kills you. Does not work if the Invincibility cheat (OLIMYELLA) is active.

OLAPPEAR - I See You
Only works on the Town and Cliff levels for their respective bosses. Forces them to spawn before fulfilling the prerequisites.

OLREDLITE - Logic Toggle
Turns off the AI logic. You cannot interact with the AI while this cheat is active.

OLSHAW - Buh-Bye...
Enemies receive more knockback. I don't think it increases damage, but it needs more testing.

OLBOOST - Points Added... | No Advancement. | You're a Deputy now! | You're a Sheriff now! | You're a Marshal now!
Intended for Marshal Training. Instantly adds 5000 points to your total Game Score.

OLBLACKOPS - I'm On It! | That Was With My LEFT Hand!
Everything through the scope is fully lit, regardless of actual lighting.

OLRUNAWAYTRAIN - I Wish I Could... | Runaway Minecar Toggle!
Entering this while standing on any of the tracks in the Mine level will toggle a "Runaway Minecar" mode. Best used on sloped tracks for speed.

OLYAHOO - Aaak Aaak Aaak!
Grants you a temporary Sheriff's Badge power up.

OLSCORE
Instantly skips to the cutscene that plays after completing the level the code was used on and advances to the next level.

Enter one of these to instantly enter a specific level.

OLANALKLIE - "Underwear Alignment" Toggle
Messes up the texture alignment.

OLSCHMITTY - "Little Engine Bug" Toggle
Visuals get a trippy hall-of-mirrors effect.

OLLILLIPUT - Oz Mode Toggle
Quoted from "Outlaws Secrets" on GameFAQs[gamefaqs.gamespot.com]: Also known as "Dorothy" Mode, this speeds up the voices and makes the people smaller. Too bad it's for Macs only.

OLDEBUGGER
Presumably a disabled or broken debugger cheat.

OLEDIT
Attempts to access an editor, but fails because of a missing "oleditor.dll" file. Minimizes and may crash your game. The file is available for download online, but to fully use it, you'll need to run the game in Windowed mode.

OLBOUNCE - Super Jump Toggle
Seemingly broken. Doesn't seem to affect jumping at all. Some say it requires binding an extra input through the registry, but I couldn't get it working.

OLDRYGULCH
Nonfunctional cheat. Same name as one of the multiplayer maps.

OLFORT
Nonfunctional cheat. Same name as one of the multiplayer maps.

OLGRANARY
Nonfunctional cheat. Same name as one of the multiplayer maps.

OLWILDERNESS
Nonfunctional cheat. Same name as one of the multiplayer maps.

OLIMAUZER
Has no notify text when entered. Unknown effect. Seemingly related to "OLSRSSEZNOUSERS".

OLSRSSEZNOUSERS - No Users Enabled! Stop cheating ash! | No Users Disabled!
Something multiplayer-related.

---- - Coordinate Info Toggle
Possible leftover confirmation from a previous LucasArts title, Star Wars: Dark Forces. The cheat code LADATA toggles coordinate info similar to OLGPS in this game, neither game displays a confirmation message when entered.

---- - Weapon Super Charge
A leftover confirmation from a previous LucasArts title, Star Wars: Dark Forces. The cheat code LARANDY triggered this message and Supercharged your weapon.

---- - Insect Mode Toggle
A leftover confirmation from a previous LucasArts title, Star Wars: Dark Forces. The cheat code LABUG triggered this message.

OLACTORDUMP - Attempting ACTOR DUMP | ACTOR DUMP ACTIVATED
Creates a file in the game directory called "olactor.dmp".

OLCHECKSUM - Checksum data saved
Creates a file in the game directory called "checksum.err".

OLDUMP
Creates a file in the game directory called "outlaws.dmp".

OLMEMDUMP - MEMORY DUMP ACTIVATED
Creates two files in the game directory called "res.log" and "malloc.log".

OLNETDUMP - Attempting NET DUMP | NET DUMP ACTIVATED
Creates a file in the game directory called "olnet.dmp".

OLSWAB
Creates a file in the game directory called "olearwax.txt". May crash the game.

OLTEXTURESCAN - # bogus textures cleared
Clears bogus textures, whatever that means.



OLFPS
Displays the framerate and some other debug info.




OLGPS
Adds a display to the map view that shows player coordinates.



OLHOWMANY - Sound Off, Marines!
Displays the current number of players (for multiplayer).



OLJTF - Just The Facts, Ma'am
Displays the current game stats.






OLMAPID
Displays an ID of every wall on the map view.










OLMEMORY
Displays various memory stats.












OLNETWORK
Displays various network stats.















OLPOLYS
Displays various polygon stats.









OLSHOWTEX
Displays a specific texture and related information. Don't know how to scroll through the textures.

Nov. 20th, 2018: First version of guide
Nov. 26th, 2018: Added credits and sources, can't believe I forgot this
Nov. 29th, 2018: Reworded the OLZIP cheat description to reflect my experiences
Dec. 3rd, 2018: Reworded OLBOOST and OLYAHOO to be more accurate
Jan. 10th, 2019: Very minor edits to OLYAHOO and OLSHOWTEX
Oct. 27th, 2019: Tweaked the image placements
Jul. 13th, 2022: Source links check, minor edits

I used various sources to verify that I have as many of the cheats covered as I could find and in a couple situations verifying what a cheat code did. All links below were last confirmed fully functional on July 13th, 2022.
GameFAQs: 'Outlaws Secrets' FAQ by intermp[gamefaqs.gamespot.com]
GeoCities page by njustinas: Outlaws Cheats for PC[www.geocities.ws]
IGN: Outlaws Cheats
Gamespot: Outlaws Cheats[www.gamespot.com]
Gamesradar: Outlaws Cheats[www.gamesradar.com]