This is for offline save editing. Use it responsibly. Do not ruin the experience for others in online hubs.
If you find a working , here is the standard workflow: monsterhuntergenerationsultimatenspromslab link
The game is known for a vast amount of free post-launch content available through the "Download" menu in-game: This is for offline save editing
Here's a summary of the game and a review that touches on the slashing lab aspect: monsterhuntergenerationsultimatenspromslab link