I've played in lots of different play-styles. Bomber, Gunner, Swordsman, a mix of the two. All on elite, and I've never really had a challenge. The only times I've experienced difficulty was when I wasn't full 5* and during shadow lairs. Now missions are just not hard at all. Enemy attack patterns are very predictable and easy to kite.

I think they should add a new difficulty; Nightmare.

As I said above, enemy attack patterns are extremely predictable. In nightmare difficulty, all enemies will have brand new attacks and patterns. They won't have a health increase, just smarter, faster, stronger.

--New AI and Attacks Ideas--
New Mechanics make them stronger against swords
Construct Family

Lumbers - Charge Attacks has a slightly faster cool-down, and releases an explosion similar to Sudaruska's charge attack

Shufflebot - Have a new attack, they can fire a laser straight out of their eye, just like the turrets. It requires a lot of charge up however.

Retrode - Death Explosion will actually do damage, don't get too close!

Gunpuppies - Have a new attack that allows them to charge up a bullet and launch a pulsar shot, but travels even slower. If they are hit by a gun, then they will skip the charge up time and fire instantly.

Mecha-Knights - Will run from the player when low on health, and attempt to heal with a heal capsule, they can only do this once.

Fiend Family
New Mechanics make them stronger against swords and bombs, no changes versus guns.
Devilites - New AI -

Gorgos - New AI - Will stay close to one another, and only spawn in groups.

Greavers - New AI - When low on health will run from the player, and constantly release status-mist but won't launch projectiles, doing crowd control.

Trojans - Attack Faster, and can actively shield just like Mecha-Knights.

Silkwings - New AI - Will actively avoid players when it can, New Attack - On death releases a healing pulse.

- Slime Family -
New Mechanics make it
Stronger against swords, weaker to bombs

Jellies - New Attack - On death, the slime left behind will slow the player when walked in.

Lichen - New Attack - On death, spawns a Drop, amount spawned depends on size of lichen(Look at purple thing inside)

Polyp - New Mechanic - If its spikes hits a slime they are healed for a small amount.

Drops - Will Spread out from one another, making it harder to kill lots of them at the same time. Makes it easier for them to overwhelm the player.

- Undead Family -
--Stronger against Guns and Bombs, swords are still pretty effective--
Howlitzer - Can release an ear-piercing scream if you stay to close for too long, which stuns all nearby players.

Kats - Have 2 modes, Attack and Defend. During Attack, they will charge the player very quickly and constantly attempt to bite them, when below 50% health they will actively avoid the player and launch projectiles.

Phantom - no changes.

Zombies - Have a New attack that replaces their breath attack. They instead launch out a bullet which after it reaches it's max distance or hits a player, explodes into a small cloud of status mist. Their swipe attack also comes out much faster, punishing players who stay too close or get to confident.

Almirian Crusdaer - no changes

Deadnaught - Have a new attack, they can slam the ground and spawn 3 Zombies to protect him, cannot spawn anymore until atleast 1 has been killed, in which it can spawn 1 to replace that one that died.

Bombies - Don't release projectiles on death, Instead their explosion has more radius, and they do a lot of knockback. Be careful!

Scarabs - Are annoying enough, no changes.

- Beast Family -

Chromalisk - Fire their spit attack much more often, Keptolisks can use items stolen from the player, IE: using a stun vial and spitting it back at them

Wolvers - Will always stay close in their pack. When a Wolver is under 50% health they become enraged and attack much faster.

Bunnies - Hop around very quickly, very unpredictable where they will go. Attacking at random.

- Gremlin Family -
--Are more like players all around stronger against everything--
Thwackers - Can now throw status vials at the player and sometimes summon a WEAKER mecha-knight when under 40% health.(can only ever summon 1 per gremlin)

Mender - Can encase enemies in a bubble which reduces their damage taken by 25%.

Scorchers - AI fixed. Have a new attack, when in close quarters, will pull out a hot edge and start fighting melee.

Demos - Can place haze bombs.

Knocker- Attacks faster. Explosion is bigger.

NO changes to the rest of gremlins

-- BOSSES! --

Snarbolax - Has New Attacks and AI. Can do a rapid-fire Snarble-barb attack and his roar inflicts stun on all players. Has an attack where he teleports around and bites at the player.

Jelly King - Has New Attacks and AI. Can melt himself into goo on the ground which slows movement speed of the player and slowly does damage.
He can also Summon Jellies to his aid. When enraged he will throw slime globs everywhere which leave goo that slow down the player. His melee attacks
will come out faster.

Roarmolous Twins - Has New Attacks and AI. They no longer have to be hit by the other twin to be damaged, instead they have a whole new mechanic. While you can damage either twin at any time. they will have a bit more health. If you damage one twin more than the other, the other twin will get stronger. They can launch pulsar and catalyzer shots. They can also fire a missile which spawns a small shock mist on the battlefield. They gain these attacks over time.

Vanaduke - No longer, has the fire orbs around him. Can be damaged with swords easy as pie. Has a new attack where lines of fire come from both sides of the arena. His Smash attack will put lots of fire where he hits it(trapping players in a ring of fire), but wont spawn fire anywhere else. Can also launch a fire orb which sends fire projectiles flying all over the arena.

And Finally the Rewards

Nightmare Rewards

Drop rates of rarities are tripled in nightmare mode, orbs and crystals will be dropping like candy. You will see a lot more Golden Crowns Spawn as well. Equipment will also drop way more often. You will mostly be seeing 3* and 4* gear drops. when it happens. Bosses will drop 2x as many tokens as normal. You will either 6x tokens or 8x tokens when completing a boss run. Also bosses will have more crates in their final treasure room.

TL:DR, They should add a Nightmare difficult which adds new AI, Attacks, and maybe Mechanics to enemies and bosses to make them more difficult, but in a fair way.

What do you think?