Stealth in the yiga section...lol just stasis people.
That and all of the Yiga guards die in one hit if it's a stealthstrike. The segment is painfully easy with a high level stealth potion or the Sheikah armor.
You can make a campfire instantly on Death Mountain by just dropping wood.
You can stack armor effects and cooking effects past three stages. I used a haste elixir at night while using upgraded Sheikah armor (with the night speed bonus) and I was running so fast the animation looked like a cartoon.
You can tell when the Lord of the Mountain is at Mount Satori if you see a glow at night (there are tons of Blupees there as well, and the mountain is always filled with crows or goats for meat).
If you open a chest other than from the front without pants on, then when Link kicks it he grabs his foot and winces. The same happens if you're crouched down and open it, even if you have something on (he punches it).
Being in bushes or tall grass actually increases your stealth.
If you drop or throw your weapon (like a boomerang) and have lost it, then use the Sheikah Sensor+ to find it. You could also do the same if there's arrows everywhere. In case you missed it also when you got the Sheikah Sensor+, you can buy Compendium entries (it's random from selected categories, and each one costs 100 rupees) from Symin at the Hateno lab. You can also take photos of treasure chests and the different kinds of ore deposits to track them.
You can burn the leg guards off of Hinoxes to attack their legs more easily.
Frozen enemies will take increased damage.
You can destroy Guardian's legs to immobilize them or destroy the flying one's rotors to send them into the ground.
There are five types of monster disguises in the game; four are from Kilton (the Bokoblin, Moblin, Lizalfos, and Lynel masks, though Lynels will only be fooled temporarily) and the other is from the secret club in Gerudo Town, which at night will glow in the dark and act as a lure for more Stal enemies to spawn, and if you have all three it will disguise you from them. It also increases your bone weapon damage.
Traveling merchants sell better stuff on rainy days.