In Remnant: From the Ashes, leveling up faster has a few perks that can get you running in the game quite smoothly and you will definitely enjoy the game.
As the game is mostly procedurally-generated, many players will get random elements all over the map and in dungeons. So there is no specific place or thing to do to make your game faster or level up faster.
Our Remnant: From the Ashes Fast Level Up will, however, teach you one neat trick that can help you gain experience points faster than usual and thus level up faster.
Remnant: From the Ashes Level Up Fast
At the start of the game, you can do a thing that will get you faster level-ups. When you use the red crystal for the very first time you get teleported to the Founder’s Hideout.
Check the table there and you will find a key card for Ward 13. With this card, you will be able to unlock a special trait in the game that will give you a special bonus XP.
You will need to go towards the reactor and instead of getting in it you would want to go downstairs to the Ward 13. Use the keycard you found on the table in the Founder’s Hideout to access the Ward 13.
Go to the second room on the left and you will see a tape recorder on the table, you need to play that tape recorder. That is going to unlock the Elder Knowledge Trait.
This special trait will increase your experience points by some certain percentage, and you will need to increase its level. When maxed out, this trait will allow you to increase experience points by 35% and also improve all other traits quicker.