Use free teleport to get away from strong players; it refreshes every few minutes.
Troops are unlimited, so you don't need to worry about losses.
Start by attacking Cesares (can use the find button).
Upgrade skills as follows: Right, Right, Left, Left, Right
Go to mines that still have caesars in them to get an additional 3 loot. Grab loot fast.
Gather higher veins if possible, and gather as many fracture veins when they appear. Use the “copper hauler” skill to finish them instantly.
Every 1 minute, start a new gathering at any vein for a bonus +5k loot when reaching it (timer not shown, you need to pay attention to when you last got the 5k boost).