Lesser Sentry

The lesser sentry, or precursor sentry is a ancient drone like precursor enemy, that can be found in the precursor ruins mission and guarding precursor buildings in precursor minibiomes.

It is immune to all elemental debuffs except cosmic, immune to darkness, immune to insanity, has a 0.5 base protection value, and recuperates from knockback 50% faster. It deals 9 (slash, physical) base damage on contact.

Drops
It drops precursor servitor loot, wich includes most uncommon precursor robotic loot.

Fighting
The precursor sentry is in a way, a complete pushover, neither in contact nor it's ranged attacks deal enough damage to consider it a threat, so when in a fight, deal with them last.

It is advised to use electric weaponry agaisnt it, as it will deal 30% extra damage.