This is the build I found to be the easiest for this achievement and if there are improvements you think can be made feel free to say so in the comments.

Weapon is totally preference but I like the combat bow with return arrow and split-shot, because split-shot does crazy damage early game. You really only need to use the bow up until the first 2 bosses and then after that the turrets do everything for you.

FIRST UPGRADE
Having 6 turrets instead of 3 early game = more dps

2ND UPGRADE
In my run I chose the 3rd before the 2nd but I think using this first would be better because you get to use more turrets per level cause the cd is faster

3RD UPGRADE
This is the upgrade that brings the whole build together. Since the cool-down is less than 10 seconds from rich get richer getting this one means no cool-down. This upgrade is stupid broken for this build if you just stack all your turrets in one spot, it WILL shred the final boss in less than 30 seconds

No. You do not need any specific relics for this build but there are some that will make it better.

HELPFUL RELICS
If you are comfortable with being a glass cannon this relic is just free damage and movement speed
(I love this relic so much)

This relic would be really good up until you get your third turret upgrade since there is no way (that I know of) to get no cd before that.

This relic is good for early game when your damage is a little lackluster and it takes more time to clear rooms AND is good for boss fights because of the phase transition time. There are probably much better relics but this one is solid.


IM TOO LAZY TO PUT MORE RIGHT NOW SO FEEL FREE TO COMMENT RELICS YOU THINK WOULD BE BETTER FOR THIS BUILD AND I WILL PROBABLY ADD THEM TO THE GUIDE