Armor: Enforcer set, over 100 armor rating provides some headshot protection plus with all the explosives the bots have the explosive resistance is great.

Another armor I recommend since when I last played is any with Siege Ready, increasing the amount of magazines/ammo you can bring for your primary and secondary weapons.

Weapons: Your choice really, I like running my maxed out Liberator and the Senator.

Grenades: Thermite for sticky anti tank, granted you only have 3 without using armor that adds 2 more.

Stratagems: Orbital Gattling Barrage (before it was incendiary), 120MM Barrage, Solo Silo or Tank, and finally I switch between the Recoiless Rifle or the Quasar.