Neverwinter

GLITCHED for some like other achievements in this DLC

*Thanks FxH Final for pointing out you should be able to get this before Yrlakkas Recon Operative quest! (in my(Shadow's) experience I wasn't close to 100 by that point -- It's very random spawns.)*

An annoying kill 'enemy' achievement, although far easier than most previous kill enemy achievements.
Not nearly as fast as killing 500 Githyanki.

The Golems seem to be somewhat rare spawns in the groups of Githyanki, and are almost always in a combat of some sort when they come into view. 0,1, or 2 Golems is the usual spawn rate currently in a group of enemies, but most often 0.

I'll update as things change, definitely not a hard achievement, just a 'bit' grindy because of the potential for time blocking.

If you really want to grind this, there are two ways:
1. Join people doing the Githyanki Fragment Expedition or any of the Githyanki info gathering quests and go kill any Golems that spawn. Do NOT do the Githyanki Warden Expedition for the Golems.
2. Requires high enough VIP rank to summon teleporter post, and at least one other info gathering mission available.
Start any Githyanki info mission, run around and kill all Golems, then teleport out to anywhere or another mission. As long as you haven't completed the info mission objectives, you should be able to teleport to it again from inside a different info gathering mission to get a whole new map of enemies to kill.

You can find your progress in the in game menu's under:
"Quests"
"Journal"
Right tab to "Achievements"
Scroll down to "Slayer"
Scroll down if necessary to "Crystal Golem Slayer"