The 2nd green portal at the beggining of chapter 3 through the 1st doorway there is a green portal on top of 3 blue ones. Im not sure how to jump high enough to get in the green portals and cant climb the wall cus it kills me.

Press the number buttons at the top to switch weapons, not tab.

I made it alll the way to the city area after killing the 1st boss and hit save but it brought me waaaay way back. Also changing the sprint from c to shift would be super helpful