As Random360 stated, when you stand in a corner you can fend them all off,true.
Slomo-Mechanic is good so far, i just think its way too irritating to have blinking angels still fading in and out in slomo,so you never know what hits you,you cant prepare yourself in any way. Maybe let them port to the left or the right,but dont let them completly dissappear.It gets shear luck then for the player in the middle :-)