Insanely frustrating to try and get back to the surface after digging. Jetpack uses fuel way too fast and upgrades give minimal benefit. I was softlocked multiple times by being stuck down a tunnel i had dug with no energy or fuel. It felt completely random whether I could spam jump and climb to the surface or remain stuck in a pit of my own making. If you would like players to be more aware of the paths they are digging for the return trip that is fine, but please implement something that can teleport you to the top for when players are stuck. Maybe have it cost money or you lose your inventory.