I've done all the missions for this. Or at least all the missions the game has thrown at me. But the game has left me not knowing how to get an actual Ark Spike.
I know how to get the batteries, but I have no ark spike in inventory and no clue where to get one. A search here only turned up all the bugs about how none if it works as advertised, but not how to get a spike.
For giggles, I brought a battery to see what would happen. The game took my 10K script, but I have no batter in my inventory. EDIT: Found the battery in my currencies.
Figured it out. you find the spikes on the ground and activate them.