Warhammer 40,000: Space Marine 2

This achievement can be grinded out during Mission 1 of the Campaign on Easy Difficulty.

Approximately halfway through Mission 1, (Skyfire), your objective is to rendezvous and assist the Astra Miltarum in defending the entrance to a base.

Upon arrival to this objective, you will have around 30 seconds before a massive swarm of Tyranids arrive. You have to defend until the entrance to the base is open and where you are prompted to move into the base. However, this is where the grind begins.

Once you've defended the base from attack, you want to position yourself to the left side of the entrance where there is an infinite number of spawning minoris enemies that climb up a wall. I believe this mini swarm to number between 100-150 every time a fresh swarm arrives. Keep hacking and slashing your way way through the Nids. I netted around 10,000 kills in an hour. Video for reference.

OK, so what you’re gonna wanna do is play the first mission and wait till you get all the way to the part to where you have to kill all the alien thingies while defending the big damn. Then you’re gonna wait till the right side of the alien start climbing up and throw three grenades on the right pick up another set of grenades, which is around the area and throw three grenades on the left and all you have to do is reload the checkpoint and you’ll be five seconds away From climbing the wall. You’ll get about 500 kills every time. If you wanna see me doing it live for an explanation go to my most recent live on my Twitch and go towards the end of the video and you will see me spamming the same check point. My twitch is “Ariihow”.