I recently obtained a copy of the new dlc, Crimson Hammer. After going on a run with some friends and guildmates, I finally obtained the two weapons from the tier 3 version of the mission: The

5* Warmaster Rocket Hammer
and the
5* Dark Retribution

When I first got them, I thought "wow, these weapons are amazing!" Then I realized that they (actually, just the rocket-on-a-stick) were a little too amazing. The Warmaster Rocket Hammer has a 3 attack combo: an initial swipe, a damage dealing dash approximately the range of a flourish charge, and a SS-esque second hit. However, due to the power of the dash, I can use it to take out gun puppies in one combo, and lumbers in just a bit more than one combo. Not only does this sword have extremely high dps against everything neutral and weak to elemental damage, the dash usually carried me out of a monster's range, so that I rarely got hit while spamming it. The user-unfriendliness of the SS line's second strike has always been a shortcoming, and the Warmaster Rocket Hammer completely negates that problem.

To give you an idea about my experience testing this weapon out in the Royal Jelly Palace, here's an approximate record of what happened.
Monsters spawn (2 gun puppies, 2 lumbers, 4 jellies, 2 silkwings)
I run behind the gun puppy and use one combo. Gun puppy down.
I spam right click at the jellies. Two jellies die in about 3 seconds.
I run around the lumbers, and spam at them. Both die in about 6 seconds total.
I snipe the other gun puppy with one combo.
I spam right click once again, and the other 2 jellies die.

An usually challenging battle is ended in no more than 15 seconds, with no damage on my part. All I had to do was spam this weapon, and everything simply died.

This weapon takes little skill to use effectively, and is just too good. For pure damage, I seriously doubt any elemental weapon in the game can come close to this sword. I seriously think that this weapon should be nerfed, as it is a straight upgrade to the brandish/DA line in nearly all situations.

I see this sword becoming the new swordsman's favorite and in particular,and a powerful alternative to the flourish in lockdown. However, the Rocket Hammer is simply too overpowered in it's current state. With it in my arsenal and the propagation of arsenal stations, I don't even see the purpose of getting weapon slot upgrades anymore. In fact, with this and the flourish, I can sweep through every single floor in the game without much conscious input.

Not only is this sword overpowered, it is only available through buying/trading from somebody who bought the dlc. This to me signals the change of Spiral Knights into a "pay to win" game, where the players who spend money will utterly destroy the f2p players, in this case with a huge Rocket "hammer." As fun as the dlc may be, this decision on OOO's part seems flawed, and I believe at least one of two things should happen: either the Rocket Hammer be nerfed, or the dlc made available without direct purchases.