u/Vivid_Jellyfish_4800

My fanart of Liara.

What are the fast and effective ways to deal with these things? I'm using Viessa with Cold Snap Watch. I've seen players bring them down fast using Valby, Gley etc. I hope I can do the same with Viessa. I'm trying to solo the first level and hopefully do 2 & 3. My weapons are Voltia for shields, Thundercage and Hammer & Anvil, but the latter is used with Frost bullet.

How do I finish this (0/2)? I've done a few Axion infiltrations earlier, but the number is still zero. I tried enabling the Accept other infiltration support but to no avail.
How exactly does this work? I have come across this in the past and I don't remember how it went.

It says here ( images at the comments below) the duration of Frost bullet is 20.5s but whenever I trigger Frost bullet I only get 13s which is the cooldown. And out of that 13 seconds only 5 seconds of those are unlimited ammo. I thought the ideas was unlimited ammo for the whole duration of the Frost bullet.
As shown in the video starting at 8th second. There are also inconsistencies whenever I trigger Frost bullet, it gives only 6s duration aside from 13 seconds duration during onslaught missions.
Am I missing something here?

Milk tea beige and Sun-kissed beige.

Am I the only one having this issue? I'm not block by Nexon or something?