Starting items: Great for bruiser v bruiser matchups.

Core items early game:

Solid item for any bruiser, gives armor lifesteal and damage all of which allow you to exchange with other champions fairly easily.

good versus bruisers. Cheap for the amount of stats you get.

Good early game item, will synergize with your atmas that you will grab later

health is good for teamfights and will also synergize with your atmas.

you can grab the chain vest fairly early after you get a few core items, but you should grab the giant's belt first. Finish this at some point of the game and you will be very strong.

will be a core item as it gives max hp, which is an amazing stat because it defends against any types of damage, including true damage from ignite.

Gives a nice stat boost. Works nicely when combined with atmas. Does not offer many base defensive stats though so make sure you are tanky enough.

Optional items?

For around 1500 more than atmas you can get an item that gives you much more killing power on high health targets. With bloodrazor you can autoattack any target and basically kill it, provide you are tanky enough to sit there and autoattack. Because the price is so immense and it offers little tankyness, you should not consider an item like this until you have completed a few core items.

Solid item if you are going up against a caster heavy team comp, but make sure you have enough base health and that you are not getting melted by physical damage.

I don't really like wits end when combined with atmas, I would usually rather take one or the other. Wits end can be used against caster heavy comps but the extra magical damage is somewhat useless as when building crit you want more base damage.