The Defused is a small mod that adds end-game content and QoL changes.

Shales         

Scalding variant commonly found around the nether's lava oceans.
Can be cooled down with water or reheated with lava. Has slab variants.

Guardian Eye     

A new item that drops from guardians. 
Used to brew Mining Fatigue. Mining Fatigue can be made into Haste with a Fermented Spider Eye

Chiseled Dark Prismarine      

Just a cool (creepy looking in my opinion) decoration block

Gazer      

Works like the observer except instead of a short redstone pulse,
It turns on when it detects a change, and than turns off when it detects another change.

Shulk      

A new food dropped by shulkers.
Can only be eaten raw. Has no saturation

Burnt Shulk      

Made by smelting Shulk. Can be used to brew Potions of Toxicity

Toxicity

A new effect simular to poison. It deals more damage the more health you have
(Useful for defeating mobs with a lot of health)

Creeper Defusing

You can now use shears to defuse creepers to stop them from being able to explode.
When defused they can only be manualy ignited.
You can refuse them with gunpowder.

Charged Ashes      

Drops from mobs killed by a Charged Creeper.
The more health the killed mob has, the more powder you get. (Also looks like a bean.)

Charged Ash Cube      

An unstable version of the tnt. Explodes when you walk over it.
Right-clicking it with Charged Ashes charges it even more (Indicated by particles).

Sword Tipping

Swords can now be tipped. Simply throw them on the ground and use a splash potion on them.
You get 6 attacks per potion with each giving 1/5 (0.2) of the potion's effect lenght.
The amount of charges you have is displayed on a GUI around your crosshair.
Attacking mobs with a tipped sword makes custom particles.

Void Items

You can throw some items into the void in The End
to get these items

Warped Effigy      

Obtained by throwing a Totem of Undying into the void in The End.
Teleports you to your spawnpoint if you die.

Perfume      

Obtained by throwing a Bottle of Honey into the void in The End.
Can duplicate any placed bush-like block (Flowers, Saplings, Dead Bushes, etc…) by right-clicking

Bejeweled & Enchanted Bejeweled Apple      

Obtained by throwing an Enchanted or a normal Golden Apple respectively into the void in The End
After consumption gives a small amount of absorption and knocks all mobs around you away.

Needle Tick     

Obtained by throwing an iron sword into the void in The End.
Deals comparatively low damage by itself (2), but makes a foe take bonus damage in form of collapse.
Collapse deals 2.5 damage of the weapon after [amount of damage]+10 ticks. Each strike adds both to the total collapse damage and to the delay.

Enchantments

Tackler

Applied to shields. After right-clicking with the shield, you dash, knocking everything you run into away.
After every use, the shield gets a 1s cooldown.

Highlander

Applied to shovels. Makes the shovel into a weapon. The longer you fall, the more damage you deal. 
Incompatible with Efficiency.

Combustible

Applied to tridents. If the weather is clear, cause a fiery explosion that doesn't break blocks when a Trident hits something. Do the same but without fire if the weather is rainy. If the Trident also has riptide and the Trident is released before riptide is charged, the player goes backwards from their facing direction.
Incompatible with loyalty.