so apparently on "kill crota" checkpoint when you touch the crystal, theres a wall around you that appears that avoids the guardians or the enemy to attack each other till crota spawns and brings down the wall by pointing his left hand, BUT MY FIRETEAM AND I FACED A GLITCH THAT SHOULD BE FIXED BECAUSE ONCE THE MAJOR KNIGHTS(OR NORMAL MODE NON MAJOR ONES) COME NEAR THE WALL THEY JUST PASS THROUGH IT AND DAMAGE US OR KILL US. I UNDERSTAND THAT GLITCHES THAT MAKE THE GAME CHEESABLE SHOULD BE FIXED BUT THIS IS FRUSTRATING AND RUINS A CROTA RUN FOR US, FIX IT BUNGIE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!