Where to start?
1. Bugged shadow traps that reactivate everytime you go into frostmourne
2. really buggy valks, you have to keep them stunned or else they warp, plus they go in completely random directions, not in one direction as theyre supposed to.
3. Frostmourne is semi bugged, you fall through the floor randomly, no matter how good your PC might be. Also theres the problem of a instant one shot when you step in.
All in all those things make it damn near impossible, we're making progress though.