Kindlewastes hollow halls issue

[badgerjoy]

After two glide parts comes a tower in shroud. Needs 4 marked mobs to be killed but there is only three in room. How common is this? Tried three times and everytime same issue and barrier stays. If you log out and log in it says barrier done.
Barrier can be skipped by going around structure but it´s pain in the axx.

[Silent Warrior]

This happened to me a couple of times already. On my last run through Kindlewastes halls even at two barriers the necessary mobs didn't appear.
Normally I never chose this way, but in that case I did it: just use your pickaxe and dig your way through the wall. You can do it right next to the barrier, just one metre away.

[badgerjoy]