Some other game used this method for climbing too but I cant for the life of me recall what it was. --- If a woman sleeps with 10 men she's a slut, but if a man does it.......... He's gay, definitely gay.
My friend did terrible at this too, he would keep slipping. Near the end he was like thank god you can do this and got us past it because apparently only one person needs to make it sometimes.I just told him it was all thanks to ninja gaiden 3 and its stupid kunai climb.