Bots:

Pummeler, that one heavy pistol that isn’t the senator, stun grenades, heavy Armor with extra grenades or peak physique, AMR, ballistic shield, stun mortar, OPS

Bugs:

Pummeler, grenade pistol, stun grenades, light or heavy Armor with extra nades, flamethrower, Gatling turret, OPS, eagle airstrike.

Against bots, pummeler and ballistic shield makes you basically invincible. Against bugs, I’ve found heavy Armor to drastically outperform light Armor. You don’t need speed if nothing really damages you.