For an easier run it is strongly recommended to start NG+ on extreme. During the first playthrough select “I like MGS1” when you start the run to get two bonus camo, DPM and Auscam, that advantage your run significantly, respectively giving you double health recovery rate and a reduction of damage taken by 1/3. This due to the fact that in this run the hardest part is represented by boss battles. In fact, during this playthrough you don’t need to meet any requirements, making your way easier. Beat the game collecting all Ga-ko to acquire AT-Camo. This item (it isn’t a special item) allows you to multiply your camo index of the camo that you are wearing. Tranquillize each boss to collect their camos (for the full strategies see MGS3 Boss Battle Guide – All non-lethal strategies and rewards). This preliminary run gives you a significant advantage in the Foxhound run because in this way you have all the best camos, including AT-Camo, unlocked from the start of the game. Moreover you start with the Patriot (it isn’t a special item) that is very useful against the first part of The Pain Battle. You can complete this run on Very Easy to simplify the collection of all Ga-ko and camos, or you can complete the playthrough on Extreme that gives you a further important advantage due to the fact that a preliminary extreme run allows you to know better this mode that presents more soldiers and the other differences from lower difficulties as described at the end of the section.
Foxhound requirements and how to achieve them
Complete the game on Extreme or European extreme under the following conditions:
• 5 hours or less
• 0 Alerts
• 0 Kills
• 0 Continues
• 0 Life Medicine
• 5 life bars or less worth of damage
• 20 or less serious injuries
• No special items
Complete the game in under 5 hours
Try to learn enemy position and moves from your first playthrough. Skip all briefings and radio conversations. Keep in mind that survival mode does not pause the timer so if you need a break the only way to avoid wasting time is to enter the survival mode and put the PlayStation on standby. This pauses the timer. The timer is quite generous skipping also all collectibles.
No alerts
Use always most suitable camo combined with AT-Camo. Moss for grass areas that can give you up to 95% camo index while replenishing your stamina in daily outdoor areas, Splitter or Squares for urban zone. Use Spirit camo, that makes your footsteps noiseless, for enemies that you can tranquillize from behind with CQC or Cig Gas Spray. (For full camo guide see Complete Camo and Face Paints Guide).
No kills
Dogs do not count as a kill. Use Desert Tiger Camo that prevents suppressor degradation. Be careful with enemy on Dolinovodno in the Snake Eater operation, don’t tranquilize him when he is on the bridge because he could fall and this can count as kill. Be careful with vultures in the Mountain: if an enemy is attacked by them, this can count as a kill.
No continues.
Use multiple manual save loads. If you die or if you get spotted take the Fake Death Pill to return to the main menu to save time. After you use the only one fake pill again The Fear, if you die or get spotted enter in the survival mode and choose Return to Main Menu from options.
No Life Medicine:
Use the Sneaking Suit against boss to reduce damage taken. In outdoor daily areas use Moss camo to replenish your stamina After a boss, if you want to replenish your health, change the PS5 time to some weeks later (save, go offline and then change the date) and your health will be replenished. You can use the radio frequency to replenish your stamina. You can use each of them one time for frequency. (For full list of healing frequencies see Stamina Recovery Frequencies Guide)
5 or less life bars worth of damage
Keep in mind that about half a life bar of damage is unmissable because story-related.
20 or less serious injuries
Story-related injuries don’t count.
No special items:
Special items are Stealth Camo, Infinity Face Paint and EZ gun. At Camo and Patriot are not special items.
Differences between extreme difficulty and lower difficulty
• Less food
• More soldiers in every area
• Less ammo capacity and availability
• Soldiers can see you from further away
• Boss deal more damage and they need more hits to defeat them
Quick version: How to Get Foxhound Rank in MGS Delta: Requirements and Tips