Dual wielding Beast Barbarian

[Zhorn]

There's some way to use it with the claw attack though if I recall correctly, though it's a pretty finicky rules interaction.

Sounds like someone's playing my song
PS Godot: loving the new avatar.

@OP
I have the full breakdown of how the rules for this whole sequence works in an older thread here

but the TL;DR sequence is as follows;
For sustainability each round, we need our starting and ending condition to always be the same.
Assuming no feats, start each round with a light melee weapon in each hand (also assuming you are already raging at this point with claws)

Step 1: Free actionless drop one weapon
Step 2: Attack Action with claw
Step 3: Free claw as part of the same action
Step 4: Object interaction pick up dropped weapon
Step 5: Extra Attack with that picked up weapon
Step 6: Bonus Action off hand attack with Two-Weapon Fighting

With our end state now matching our starting state.
4 Attacks with a level 5 Path of the Beast Barbarian, all 100% RAW compliant and supported without feats.

again, go to the provided link for all the sighted rules interactions and clarifications.
The order is a precise sequence to pull off, so it doesn't offer much flexibility, but adding a level of rogue on top of that will be easy to add a sneak attack into the mix, reliably so with Reckless Attack.