Managed to level up enough to get my strength at 12 so i could finally try that "Column" weapon i had found early.
And it's rather huge, does devastating damage , but it's insanely slow. I'm not sure using it is really advised for the strong enemies (your ghost, the knight things, the 1st boss) due to how slow it is for the hard attack, and the fast attack seems to be as slow as the hard attack of the pipe (that looks like an axe).
Hmm, looks like i may have wasted points there, should have probably go for increasing health and the energy (so i could do longer combos and dodging in a row).
There a knife/shard weapon that can be found early, when you run into the first enemy , that seems to be eating something on the ground, there's a small bridge, you can jump down on a crate instead of crossing the small bridge, and follow the road there, you'll find the shard/knife)
There's a gauge for when you strike with a weapon, googled around and it looks like this enable you to unlock some special abilities for a weapon you have used enough to fill that gauge, i've been using the pipe/axe thing for a couple of hours and the gauge is not yet at its middle, i hope those abilities are worth it.
The game reward grinding actually as enemy respawn after a time (so more axiom to get for leveling), i have read that difficulty levels can be increased/decreased too with your actions or investment in one of the breaches.
There also a timer , when said timer reach a specific point (on the top right of your screen, the clock will have orange parts lighting up) it triggers a special "horde" event in some specific sectors.
In the beginner sector i didn't had an actual horde, but there was a huge thing with big horns that was wielding a bigger stick that appeared in the large room (the one in which there is the lift) in which there are a lot of early uglies patrolling or waiting.
Didn't tried to fight this one as i doubt i was prepared
edit : i take back what i said about the column weapon, despite being slow it isin fact awesome against those big knight type of enemies.
When said knight move toward you with his shield in front of you, at a specific distance start your column hard attack, as the shielded knight does not move fast, there's a good chance your molasse weapon will hit before the knight strike you with one of his sword assault.
And the column being that massive type of hammer it is, will send the knight flying and falling (something the other weapons i found can't do).
Move quickly to the correct distance and start again immediately the hard attack, if you time things right and get at the correct range, your massive hammer will again send the knight down as soon as he stand up.
Repeat until no more knight.
In fact it looks like the "column" is the easiest way to not die against the knight. May be worth those 12 levels invested in strength after all.