Changes from 5e

Are we even still playing 5e?

Below are the additional changes from vanilla 5e, beyond what you've seen so far.

Magic Weapons

A +1/+2/+3 weapon or armor isn't inherently magical anymore unless it says so. Lore-wise these are just expertly crafted or sharpened weapons.

Resistances and Weaknesses

Resistances and Weaknesses to certain damage types are far more common. While in 5e pretty much every monster is immune to poison and resistant to fire damage, these are slightly more balanced (I promise) here, and every monster and player character has one weakness.

Potions

Drinking a potion is a bonus action. When using a full action to drink a potion, you regain the maximum amount of hit points without having to roll.

Death Saves & Exhaustion

If you survive being reduced to 0HP you gain 1 level of exhaustion.

Critical Hits

A critical hit is Max Damage (including modifiers and stuff like sneak attack) + the normal roll.

Suffocating

Suffocation happens after 1+constitution mod rounds.

Weapons and Proficiencies

Weapon and armor proficiencies have been split up. Simple and Martial weapons are split up in melee and ranged options. New weapons have a proficiency class of their own, for example the Bastard Sword and the Greatbow require specialized training.

Spellcasting and Slots

Spell slots recharge determined on what Origin they originate, see Magic. When you gain a spell slot or learn a spell it's tied to your Origin and must come from the appropriate Spell Lists