Phil's Shooting Range Instapass with Last Stand (game crashes the fade. Same as IP with Jive Drive) Works on INTL PSP

Setup:

• Get OM0 Rampage.
• Starts Last Stand.
• Go to Phil's place.
• Wait for the Rampage to expire.
• Enter Phil's Shooting Range and starts the mission.

Playground on the Town/Playground on the Point Instapass with Blitzkrieg Strikes Again Works on INTL PSP (Emu waiting for confirmation on real hardware)

Setup:

• Get OM0 Rampage.
• Start Blitzkrieg Strikes Again.
• Go to the PCJ located near to the mall while waiting for the Rampage timer to expire following the driving route in the video.
• Get on the PCJ (doesn't matter if Lance goes with you).

T-Bone Mendez Instapass with Blood Bowl (leaves one instance. Could be in the interior world or not depending how you do it. Can't be done by normal means. Requieres a mod, no way known to "freeze" the fade. In theory could also be done by normal means but timer is too tight to do. Also could be mass duped with trucking to skip almos everything of SF if a proper setup is found)

Up, Up and Away! Instapass with Black Project (leaves one instance. Can't be done by normal means. Requieres a mod, no way known to start a mission during the fade when going away from Area 69)

Customs Fast Track Instapass with Breaking the Bank at Caligula's (kills both instances. Can't be done by normal means. Requieres a mod, no way to known to freeze that cutscene)

Green Goo Instapass with Las Venturas Gym (has wrong stack, no known stack fix found yet. Can't be done by normal means. Requieres a mod, no way to known to freeze that cutscene)

You've Had Your Chips Instapass with Breaking the Bank at Caligula's (leaves one instance. Cheated because reasons, it crashes in the cutscene due to the leftover instance combined with Don Peyote. Can't be done by normal means. Requieres a mod, no way to known to freeze that cutscene)

Credits to @Patrick_ who found the correct offsets.

Staunton Island 20 Vigilante Kills Instapass with Deal Steal (setup doable for hundo?) Credits: @Powdinet

Setup:

• Start Deal Steal OM0 Rampage.
• Progress the mission until the shooting part.
• Start Vigilante (you ip the 20 vigilante kills for that island).
• Get busted to kill one Vigi instance.
• Start Deal Steal again with the wrong stack instance while having a criminal killed on foot (don't go back to a copcar).
• Finish Deal Steal as the video shows (partial skips fixing the stack. The skip seems broken though).

Phil's Shooting Range Instapass with Jive Drive Works on INTL PSP (Could also intheory works on PS2 too according to Powdinet)

Setup:

• Start Jive Drive
• Progress the mission until the part where you have to kill the cholos and protecting Lance (after the autoscroller part).
• Drive to Phil's Shooting Range and start the mission (make sure that Lance is safe).
• Game will display the results from the Shooting range (passing the mission), then a fade appears and game crashes (has wrong stack tho).

Possible ways to troubleshoot the crash.

• Save before the game actually crashes by warping near a save point (using vehicle purchasing padlock teleport method). In PSP the only "near a doable save point" is Sunshine Autos Quad padlock (which is available after WhenFunDayComes mission) but time is either tight or you can't have enough time to save and reload. Maybe is doable in PS2 by using Sanchez padlock near the first safehouse.
• Stack fix with another mission (which is most probably not feasible).

LS/LV Courier Instapass with Wrong Side of the Tracks

Setup: Start Wsott in the interior world, go to the train part, go away from the train, start courier during the fade before the failling cutscene (before "all you have to do, is to follow the dam train CJ" cutscene)

The Pick Up Instapass with Pump-Action Pimp (game crashes after the IP or soflocks?) Credits: @H0rHe

Silence the Sneak Instapass with Vigilante (game softlocks in the mission initial cutscene). Increases missions passed counter and percentage. Works only on 1.04.5 (last version)

Uzi Money Triplication with Vigilante (starts the mission duped then restarts the mission due to stack given you 3 completitions. Game apparently crashes after starting another mission when finished the last instance). Works only on 1.04.5 (last version)

Grand Theft Auto Aero Partial Skip with Vigilante (skips to the part where you have to go to the construction site elevator. Leaves one instance). Works only on 1.04.5 (last version). Remaining instance could be killed with Escort Service (Instafails the mission and leaves Escort Service OM0)

Madd Dogg Instapass with Boat School - Flying Fish (Lesson) (kills the remaining instance if you skip the cutscene fast, if not it leaves one instance behind)

Bike School Instapass with Learning to Fly - Land Helicopter (Lesson)

Setup: Start bike school and leave outside the mission. Then start Learning to Fly - Land Helicopter (Lesson) and during "Push and press to maintain your forward speed" line start Bike School.

Amphibious Assault Instapass with LS Gym (can't be done by normal means. Requieres a mod and fps cap).

Setup: Go to LS Gym, get the moves, go to talk with the guy then start AA before triggering the line "You think you can last a round with me" (you get softlocked in the interior world)

Ice Cold Killa Instapass with SF Gym

Setup: Get OM0 call, release call when the gym master is talking and press a movement key on foot to get SF OM0. Then start Ice Cold Killa and press N to say no as close to mission start as possible.

Snail Trail Instapass with Body Harvest (can't be done by normal means. Requieres a mod, no way known to "freeze" a fade-out. Fps cap is not necessary, you can do it without it but would be more difficult). Strangely this instapass triggers when you are in om0 state (by killing the current Snail Trail instance or by regain om0 again for some reason).

Reuniting the Families Instapass with LV Gym (can't be done by normal means. Requieres a mod and fps cap)

Setup: Go to LV Gym, get the moves, go to talk with the guy then start RTF before triggering the line "You think you can last a round with me". Smash the RTF first cutscene as soon as possible (game could crash if you watch a lot the cutscene).

Doberman Instapass with Tagging Up Turf (can't be done by normal means. Requieres Goto0 or mod. No way known to "freeze" a fade-in)

The route from any% atm is dupeless due to the fact that duping in this version is slower than doing the run normally.

Just adding some instapasses that have been found recently and some old ones in order to fill this thread with information that in discord could be lost due to conversations.

Running Dog Instapass (mentioned in this thread) with Bloodbowl/Bloodring. Cheated because reasons (it crashes in the cutscene due to the leftover instance combined with Wrong Side of the Tracks).

Home Invasion Instapass with Pimping (cancel). Use this setup in order to instapass the mission and kill the leftover instance.

Lowrider Challenge (Bet and Dance) Instapass with Trucking

Cut Throat Business Instapass with Back to School - Pop and Control (Lesson). This is the most faster setup that I could came up with (Requieres Goto0 in order to use the save marker teleportation system)

Key to her Heart Instapass with Back to School - P.I.T. Maneuver (Lesson)

Beat Down on B Dup Instapass with Back to School - P.I.T. Maneuver (Lesson)

Kickstart Instapass with Learning to Fly - Circle Airstrip (Menu)

Setup:

• Start Flying School OM0.

• Search for 3rd lesson (Circle Airstrip) and hold N while OM0 (wait for the call to finish).

-Die during the Menu and wait for respawn.

• Go to Blackfield Stadium.

• Start 3rd lesson and Kickstart during that fade at the same time.

Bloodbowl/Bloodring Instapass with Nines and AK's

Learning to Fly Instapass with Doberman (can't be done by normal means. Requires Goto0)

SF Courier Instapass with Outrider

Firefighter Instapass with Customs Fast Track. Requires stack fixing that has not been found yet (we are not so sure that there is one existing).

Zeroing In Instapass with A Home in the Hills

LS Gym Moves Instapass with Beat Down on B Dup

Tagging Up Turf Instapass with Beat Down on B Dup (can't be done by normal means. Requires Goto0)

LS/SF Courier Instapass with Cleaning the Hood

Paramedic Instapass with Home Invasion (stack fixing with BMX Challenge and Life's a Beach)

Setup:

1. start bmx challenge and dupe Life's a Beach.
2. die or get busted to kill one Life's a Beach instance (busted is faster)
3. start Home Invasion and drive to the marker
4. Get a car and arm a bomb
5. [this is the tricky part] I've figured out you can trigger the house marker on a vehicle. But the bomb doesn't detonate during the fade. So get blown up right before triggering the marker with little momentum so that you trigger it after the explosion. Then pausebuffer for unknown ammount of time so that by the time the cutscene starts playing you are at the hospital
6. Start Paramedic during the "Hold down the key to sneak." cutscene text.

Firefighter Instapass with Key to her Heart (stack fixing with Boat School (Menu) and High Noon)

Setup:

Start Boat School during High Noon and die OM1 to kill the bad instance (hold Y so you don't fail all instances). Use snapshots to orentiate yourself and jog to Key to Her Heart marker while holding Y. Well then die OM1 to kill the bad Key to Her Heart instance and instapass Firefighter as showcased in the video.

Firefighter Instapass with Key to her Heart (stack fixing with Duality minigame)

Same setup as the previous one but stack fixing with Duality.

Learning to Fly Instapass with Supply Lines... (stack fixing with Driving School (Menu))

Setup:

Start Learning to Fly during Launch the Red Baron!. using driving school D-PAD LEFT to fix the stack and partial skip into the line. Game crashes after because two instances of "Supply Lines..." are running one of which still has still the wrong stack. Not found a way to kill the "bad" instance, neither keep the line running.

Bike School instapass with Boat School (Menu)

Setup: Start Bike School during Boat School menu without pressing Y or N. This instapass only works if you've completed the first two courses of bike school previously (or complete them after you do it) or by completing the second last test later.

Freight Train Instapass with Freefall (using Driving School (Menu) to partial skip freefall to the correct cutscene)

Paramedic Instapass with Home Invasion (stack fixing with Duality minigame)

Setup: Same setup as the previous one (stack fix with BMX and Life's a beach). You also could do the following nades setup with capping 3 fps ->

Boat School - Basic Seamanship (Lesson) Instapass with Ryder (can't be done by normal means. Requires Goto0)

Cop Wheels Instapass with Tagging Up Turf (can't be done by normal means. Requires Goto0. You can freeze the cutscene with buy property mission which turns him into a ped and doesn't let to start the mission due to going away from Sweet fails the setup. Killing Sweet in the cutscene doesn't work either)

N.O.E Instapass with N.O.E X4. By quadruplicating N.O.E you instapass the mission 4 times skipping what are left from Toreno's strand (used as a mdv back up strat)

LV Gym Moves Instapass with Cut Throat Business

SF Gym Moves Instapass with Cut Throat Business (crashes at the end)

It's possible but really hard and slow. There are 3 setups:

• The first one is the one Cookie posted.
• The second one is this one ->
• Third one is Vigilante with frame limiter to 3 to get the same glitch that you use in any% for LS duping.

Anyways is still slow because you cannot hold calls nor deactivate vigilante on foot in this version (at least not yet).

Not Instapasses but is related to duping.

Spilling the Beans Partial Skip with Juju Scramble (skips to the part where you need to go the ship at Viceport. Before starting the assault on the ship). Works only on versions 1.02/1.03/1.04.

Cabmaggedon Partial Skip with Juju Scramble (skips to the cutscene where the owner of VC Cabs appears with a Zebra cab. Game crashes when passing the mission). You need a stack fix in order to make it work. You can stack fix Juju Scramble with Vigilante. Works only on versions 1.02/1.03/1.04.