Full playthrough of Metal Gear Solid V: The Phantom Pain with the Infinite Heaven OSP (On-site procurement) mod that makes all missions like the "Subsistence" special repeat-missions where you start the mission with absolutely nothing at all in your inventory.

Let's go over the key factors in terms of restrictions:
The aforementioned weapons and equipment OSP
No Reflex Mode (and obviously no Chicken hat)
No supply drops or any kind of support fire or weather modification from Mother Base
D-Horse is the only buddy I use, to travel long distances faster
The only camo I wear is the standard Olive Drab camouflage
No Prosthetic Arm upgrades whatsoever (however I will be making an exception to this for Ep. 45 "A Quiet Exit" and getting the mobility upgrades for that mission specifically)

It's not all about restrictions however. I use a couple quality-of-life mods as well, namely the "no more timers" mod which lets you develop any upgrades instantly without having to wait a ridiculously long time for them. The other mod I use cuts down on waiting as well - it is part of the "Infinite Heaven" mod and it allows you to skip the painfully boring helicopter rides. Most missions start with Snake already on the ground.
I will also be earning the S rank in every mission (except the repeat missions in Chapter 2 which I will not even do) and completing the "Perfect Stealth, No Kills"-challenge in most of them, as well as the "No Traces"-challenge (which means you can't be spotted nor even touch any enemies) in some.

This Part dissected:
3:25 Ep. 10: Angel With Broken Wings
42:15 Ep. 8: Occupation Forces
50:30 Ep. 9: Backup, Back Down
1:11:46 Important Side Op: Make Contact with Emmerich
1:20:00 Ep. 12: Hellbound
2:15:15 Sahelanthropus Appears
2:24:02 Huey's First Interrogation
2:30:58 Ep. 13: Pitch Dark
3:23:53 Ep. 14: Lingua Franca
3:33:44 Important Side Op: Visit Quiet
3:38:30 Ep. 15: Footprints of Phantoms
3:52:15 Ep. 16: Traitors' Caravan
4:02:22 Ep. 17: Rescue The Intel Agents
4:12:52 Ep. 18: Blood Runs Deep
4:29:18 Meeting the Kids
4:42:22 The Kids Arrive at Mother Base