My sturggle in spiral knight would be playing GitM while wearing divine veil and my med shock UV armour of the Fallen, right from the get go, I am not so well protected against volt knight and they often one shot me if a member of my team brandish charge one of them into me while the mecha knight is charging up.

And then, there is the shock, I remember the first time I played the mission and I was shocked more times than Solid Snake did in MGS1: the twin snake during the ocelot torture scene. It was truely painful to have your glacius charge or pill cosume animation channcelled and often then not. I also get murdered in the left room on floor 2. Thankfully my teammates told me not to go up the first, I will regret ever finding out the truth.

And then the creepy music, my hands were shaking on the first few attempts at the mission, I was thinking to my self, THEY CALL THIS **** A PG GAME??!?!! THIS IS WORSE THAN FRIDAY NIGHT WITH FREDDY!!! With that been said though, later on I just got used to it. I still remember the first time when I made it through, one of the NPC ranger said that the corpses were at least 100 years old, I just 'NOPE NOPE NOPE' and ran straight to the elevator.

I wish OOO can give me another mission like this to just scare my pants off. Apocrea doesn't count though, it is an event and it is a slenderman rip off.

I would absolutely LOVE to play this music while in GitM whenever I get the chance.
Whenever you're running around the area.
For the most suspenseful parts.
I just wish there would be more actual scary levels that were replayable, so I'm all up for that.

Anyways,
...Getting hit by Silversaps in Fiend themed level while wearing a Swiftstrike Buckler and Full Chaos Set, Solo.
NOPE

"I wish OOO can give me another mission like this to just scare my pants off. Apocrea doesn't count though, it is an event and it is a slenderman rip off."

Slenderman's Origins are around the world.(No joke.) So yeah, Apocrean Is a kinda rip-off.

"Are you srs? ლ(`◉◞౪◟◉‵ლ)" WHAT!?!?! What did I do?

Sorry...... I was just agreeing on your post.... yeesh....

...Touching the tree in the sky that screams "no u."

Discovering Boswick in a bush and somehow causeing Haven to collapse, requiring maintenance from the babies of the Cradle.

Noticing upon closer inspection that the statue of Nick in the garden is really a Jelly that hardened into limestone bricks.

When it turns out that Chromas and Gremlins have a natural attraction to each other.

Lockdown.

It's a den of vice but also the only thing keeping the game alive.

I have difficulty pure bombing shadow lairs with no help from my team. The same goes for Vanaduke, who I have difficulty with under the same condition, but with the standard gear.

Another difficulty I have is with assessing certain risks. Can I sneak in and kill the mob in time, or is it not worth it?

But I'm improving on these fronts, I hope.

@Mystrian
No one cares as long as no one dies from it(except for grammar nazis). Also the message has been delivered clearly and no one has misunderstood his comment.

Party members who kill something that I have put dozens of catalyzer tags on and am trying to shield bump into the nearby monsters so I can kill/poison them all.

Catalyzer charges being only %50 useful on enemies with shields (the catalyzer tags float outside the shield). (Trojans, Crusaders, T3 Thwackers, Deadnaughts)

Slime and beast arenas that end up being mostly gremlins or mechaknights.

Undead arenas that end up being mostly greavers and devilites.

Menders that show up in fiend and undead clockworks.

Gunners in wolver dens that make all the wolvers teleport away from my bombs.

Fire/shock fiends.

Gorgos that break shields that resist their damage type and status (seriously a Firegut shouldn't be able to break a COA shield when it has full HP)

Gorgos that make aiming a pain.

Friendly mecha knights, recon knights, rescued knights that screw up your AT on levels where it is really needed (devilites for example).

Friendly NPCs that knock enemies around (into you or away from your attacks).

Debilitating lag that immobilizes you completely only when monsters appear.

Catalyzer guys are patient and good dodgers. (a great one will lead/bump a heavily tagged enemy into a large group and then kill them all)

Bombers are interesting players that can move masses and deal more DPS in some situations than even Acheron charges.

A good Pulsar guy can separate monsters and hold them in corners.

Usually when players prioritize something that I'm dealing with while there are plenty of other enemies to take out. Especially when they knock enemies out of range.

Also players have a tendency to not realize setups. You move the zombie OUT of totem range before you smack it. You move AWAY from teammates when you are shocked, as the spasms affect teammates. You move enemies INTO the bomb's radius whenever you can.
Too many players try to destroy everything on sight thus they don't seem to realize it would be faster to utilize every strength in the party. When I play I make sure to keep an eye on what everyone is wielding, and if I know what gear you have on, I'll sort that out in my head too.

But outside of parties, my struggles typically consist of fiends getting in the way of my bullets when I try to hit a switch while speedrunning, or just slimes in general. You can't hit me oiler, why should I be afraid of yo- HEY! Since when could you stretch out 6 tiles for your attack!