Guild Wars 2 - Salt in the Wound Achievement

General idea is to repeat the first wound as many times as you can by purposely dying when the rocks are thrown at you. Take all your armor off before hand to die in 2 hits. You will restart at the beginning and can get a free wound by killing the first one. I only managed to do it a few times, and then did the instance normally and got the achievement at the end. Try to hit each target 3 times before moving on to another, but I believe the only thing that matters is the number of times the damage number pops up, its not really clear. Regardless this is definitely bugged overall.

GPU: NVIDIA GeForce RTX 2080 Ti
CPU: Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
Memory: 32 GB RAM (31.91 GB RAM usable)
Current resolution: 1920 x 1080, 144Hz
Operating system: