Hi,
I've found two angles on blue lane, from which the players can safely damage the guardian without it being able to shoot back.
The first angle is on the overhang above blue guardians' curiosity shop.
It works on most of the heroes as far as I can tell, namely Lash, Drifter, Warden, Doorman, Holiday, Infernus, Bebop, Ivy, etc. You either have to stand or crouch (varies from hero to hero) to find the specific angle. You know you've found the angle, once the guardian starts to shift in and out of combat stance but you won't take any damage.

The second angle is located behind the guardian in the 'MILDRED VISIONS' store. This one works for every hero, and once you find the right angle, the same results can be expected.

I've provided images to showcase the angles in question.
I've found two angles on blue lane, from which the players can safely damage the guardian without it being able to shoot back.
The first angle is on the overhang above blue guardians' curiosity shop.
It works on most of the heroes as far as I can tell, namely Lash, Drifter, Warden, Doorman, Holiday, Infernus, Bebop, Ivy, etc. You either have to stand or crouch (varies from hero to hero) to find the specific angle. You know you've found the angle, once the guardian starts to shift in and out of combat stance but you won't take any damage.

The second angle is located behind the guardian in the 'MILDRED VISIONS' store. This one works for every hero, and once you find the right angle, the same results can be expected.

I've provided images to showcase the angles in question.