@Neonguard :

Guess Juances was sarcastic only...

He writes properly actually...

Little-Juances misspelled powerful.

Snarby:

The first time I did snarby it was with one other random. He didn't tell me how the fight worked (must have assumed I knew), so I kept shooting snarby when he was invincible. I eventually noticed damage numbers only popped up when he turned brown, and that was only when he was near the bell when it was hit, and I figured it out from there.

RJP/JK:

These levels and boss weren't really so much "learn the levels" to me, more of a "learn how to survive". The entire place is pretty straightforward, bash everything in the head a few times until it dies, boss included. The "learning" aspect is basically memorizing the exact location and type of enemy spawns, getting the right gear, and learning how to fight Lumbers, jellies, and gun pups. Trial and error.

IMF

Just learn the rocket patterns. Simple. Not easy, but simple at least.

FSC

Learn how to kill Trojans. Know where the safe places from wheels are. Stay out of the room with the angry rocket puppy if possible. Oh and yes of course, don't get set on fire.

If you don't know how to do the rocket puppy room, it's extremely hard. Plus, you'll probably end up being that idiot trying to help a few times. I know I've done it more than once, myself.

Gloaming Wildwoods

Use the bells to stun those annoying Alpha Wolvers. On the second floor, if you want to maximize your income, do not hit the northeast ghost block until you have broken open the monster cages.

Royal Jelly Palace

Do the hardest rooms before the easier ones. Enter the northeast rooms first, and kill the gun puppies at the earliest and easiest opportunity. Then do the southeast room; kill each spawn first, before doing anything else. Do not hit any blocks or buttons until the current spawn has been destroyed. Otherwise, this room can quickly become a nightmare. Then do the northwest room; kill the western gun puppy before the northern gun puppy each time they spawn, and when you get to the breakable blocks, leave the openings only 1 block wide so that you can more easily control the rate at which the enemies attack you. Finally, do the southwest room; use the choke points to your advantage by never letting them get into the wider spaces. This room is easy if you pay attention. After all four rooms are complete, head up to the final room and take aim at one of the two gun puppies that will spawn. Then, just survive to the end.

Ironclaw Munitions Factory

In the first floor, always travel together (if in a party), ALWAYS. Never let just one person sit behind and do his own thing (even if it's purportedly for a good cause, like hitting the gates for you), as that is slower and often more dangerous. Task only ONE person with handling the switches. Learn the rocket patterns and avoid them. Take active precautions against hitting switches accidentally, even if it means having to let your enemy live a little bit longer. Trust me, it'll be worth the effort.

Firestorm Citadel

Memorize enemy spawns, watch your step around shadow fire (no, seriously, I mean it. That stuff is nasty. After nearly a year, I still hit it by accident sometimes.), and learn how to step in between spike wheels to safely avoid them. You can actually run into the sides of the wheels without taking damage; use it to align yourself with subsequent wheels. Do the hardest rooms first, if you can. Only do the rocket puppy room if you are carrying an elemental gun; if not, do NOT touch that room under any circumstances whatsoever. You could MAYBE pull it off with a curse vial. The reason is that you need to kill the gun puppy to make it respawn in the default south-facing position, so you can fight the remaining zombies with ease. If you don't have a gun that can kill it reasonably fast, you run a high risk of dying by its rockets.