So, there is a way to glitch this game out of the upgrade "Pay wall" that stops you at level 20, 30, 50, 110 etc. until you beat a certain area. This guide will be short becuase it is a really easy trick to pull off, albeit a bit random when it works.

Step 1: Complete the game normally. Go for PB if you want, but the goal here is to beat the game entierly. Step 2: Clear your data. Do not exit the game! Instead, just clear your data. Step 3: Exit the menu and you will either be taken back to the start menu to name your duck, or just to the start of the game with the duck and such. If it takes you here, start timer immediately and run the game, the upgrade walls should be gone.

Happy PBs to all and good luck!