I finally borrowed a copy of this game from MrSingh so I thought I would share my walkthrough with those of you who haven't played it yet
Jump, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, BOSS FIGHT, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, FIGHT THE SAME BOSS AGAIN, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, FIGHT THE THE SAME BOSS A THIRD TIME, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, FIGHT THE SAME BOSS A FOURTH TIME, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, jump, wallrun, jump, wallrun, jump, climb on the grass, FIGHT THE SAME BOSS A FIFTH TIME, get the light seedy things, go back to the hub and repeat 3 more times.