It was different and more challenging because timing was tighter. Probably the toughest was the Sisters because it's random who gets torn. And if the torn person can't platform well (I'm not a good platformer), then you have very little time to kill the sister before time runs out. Doing Oryx in challenge mode used to be pretty straight forward if you had at least 1 Defender Titan (with Blessing) bubble. Then two of you in the middle use your Touch Of Malices and dip in and out of the bubble to melt the ogres in their tracks without reloading. When we did it with 2 Titans defenders with ToM using both Weapons and Blessing bubbles, the ogres never got off their knees and all the black orb bombs were in a nice tidy pile. That (using the blessing shield instead of your life force with ToM) was removed when WOTM dropped, which means the middle people need to use other weapons to kill the 4 ogres. Not insurmountable, but it makes it tougher than it was before. Probably have to use grenades, Sleeper Simulant / Gjalhorn and a high impact sniper instead.