Yeah I do have a discord lets move there for future chats https://discord.gg/Dxn2zrhQ
You cant climb using arrows you climb using stakes - I've posted a video on how to shoot stakes out of the crucifix on the discord but basically grab the hammer, hold down trigger and the hammerhead will rock back and forth a bit like a jackhammer... then while its doing that hold the hammerhead up to the metal part on the top of the crucifix near the flame and point the sharpened end of the crucifix where you want the stakes to go.