Expert Collector of Assault Neurons Expert Collector > Page: 25 Acquiring Req.: Collect at least 50 Assault Neurons. Reward: When collecting Assault Neurons, the Collectable Item is doubled. Assault Neuron Lv 25 Assault Neuron's Natural Enemy Natural Enemy (21-30) > Page: 12 Acquiring Req.: Kill at least 51 Assault Neurons. Reward: Killing Assault Neurons grants you bonus XP. Assault Neuron Lv 25 Legendary Assault Neuron Hunter Natural Enemy (21-30) > Page: 12 Acquiring Req.: Kill at least 119 Assault Neurons. (Assault Neuron's Natural Enemy Title is required.) Reward: Killing Assault Neurons grants you bonus XP. Assault Neuron Lv 25