Speed glitch without jetpack + resource gathering.
To do this you will need: Boltcaster (or any other weapon with projectile ammunition) and ammo.
All you have to do is just run forward, hold Q and press the reload button as fast as you can. But be careful. You will probably take some damage time to time.
Resource Gathering Glitch
Generally it’s the same glitch and you will need the same stuff. Just come closer to the resource you want and… hold Q and click R.