Is it just me or...

Is the new online dungeon series ridiculously hard? I’m on the last battle of the earth series and the opponents are 1 hitting my ultimate evo epics and 2 hitting my legends. The stats are way too high to use almost any strategy I’ve tried effectively. They hit too hard for me to have time to set anything up, and even Omegawyrm poison eater criticals aren’t helping. Any suggestions?
To clarify, Chapter 4, Earth Temple.

I use stun bomp at first then i finish it with bloodcrave and posion eater not to hard if you put the right man in the right job.

I barely scraped by with my Starter using Last Stand at the end. I find the Holy and Shadow Temples easier than the Storm, Earth, Fire and Water temples once I got past them.

I’m stuck on the last boss of the third section. Quick question: How come the NPC’s aren’t subjected by the same limitations as us? Like I get wild monsters having multiples of the same monster, but it sucks when another person can use doubles.

because AI isnt as smart as us.