Silber

This guide provided by @Aurora Aquir. Simulation was created with the assumption that the mastery level for all obstacles is 50.

* Level 1: Cargo Net

* Level 10: Cargo Net, Balance Beam

* Level 20: Cargo Net, Balance Beam, Pit Jump

* Level 30: Cargo Net, Monkey Bars, Pit Jump, Gap Jump

* Level 40: Cargo Net, Balance Beam, Pit Jump, Gap Jump, Tree Climb

* Level 50: Cargo Net, Balance Beam, Pit Jump, Gap Jump, Tree Climb, Raft Drifting

* Level 60: Cargo Net, Monkey Bars, Pit Jump, Gap Jump, Tree Climb, Raft Drifting, Heat Trap

* Level 70: Cargo Net, Balance Beam, Pit Jump, Gap Jump, Tree Climb, Raft Drifting, Heat Trap, Tree Hang

* Level 80: Cargo Net, Balance Beam, Pit Jump, Gap Jump, Mountain Climb, Tree Balance, Heat Trap, Tree Hang, Ice Jump

* Level 90: Cargo Net, Balance Beam, Balance Seesaw, Gap Jump, Mountain Climb, Tree Balance, Heat Trap, Spike Jump, Ice Jump, Boulder Move