Trying Ballista Tactician desperately

Tactician ballista player, I'm trying to get to level 93 with gear that would make traders envious... full resi a map that seems pretty good to me even if some modifications are bad, (anyway I can't expect better given the number of crappy maps the game provides me),
My adventure begins in this map, it's good I clean the mobs normally, I advance what do I see, a hysterical rare that rushes at me drains my life and mana, I dodge, I use my potions as possible place my turret finally I kill it after having been able to dodge it in a desperate way to get the mana back, while my companion left to drink a cup of coffee
Finally, that's done I advance continue my adventure in this Oasis,
what do I see a loot box? well ok I have rarity we're going to increase it +1 chest + contained item, ca Seems good, I'm preparing my setup but staying far away from this box because I know very well how it can end, ha well shit it wasn't enough, I get an OS from the abyss, and the adventure ends
This is how adventures in maps usually end, always too greedy for the game? But no I don't think so I see so many players running on it, but shit I put my finger on it I play with 2500 life but don't have ES and Lightning Spear which could have helped me
I'm stuck with this character... what should I do... I ask my friends...
I'll take note and reroll a Dead Eye right away, thank you GGG for making me understand that I couldn't play anything other than Energy Shield or Lightning Spear to be able to progress my character and not even progress on your new patch