Seeders are a new type of enemy in Extinction effectively replacing Scorpions. They are a small beetle-like enemy with glowing yellow cysts on their backs. They can crawl around quickly on any surface and will shoot smoke clouds that will attach a Seeder Turret onto an surface like the ground, walls or ceiling. Each Seeder is capable of producing multiple turrets. For this achievement, you will need to kill a total of 15 seeder turrets in one game. These will show up in any of the areas, but are most common in Area 2 & Area 3. This
can be boosted by purposely leaving a Seeder alive on the map, but is
not recommended as it can make the game very difficult if there are too many turrets on the map at a time. Players should easily be able to take out 25+ turrets within 1 full playthrough of Mayday.