3. if you found a best AOE skill weapon, break it and give it's scrap to enchant accessory (doesn't matter with level if hate to spend more time grinding, you get the most efficient but still, the grind might not worth your time.)
The problem with AOE skill weapons is the Damage tends to be Elemental so even if you put the skill on the accessory you still need to purpose build a elemental weapon with that damage, at that point you can just craft the same weapon for higher skill.
Only put it on an accessory if you can't reliably craft the same weapon since that skill will eventually disappear anyway when it gets scrapped and does not have Skill Levels.
4. And for primary weapon you might need a lot of it but important to enchant it full ASAP since it gives it's peak damage and durability
For your main weapon that you use for most enemies you can make a Physical Damage weapon or a Rainbow Weapon with random elemental damage from magic crystals.
I had some luck with Broadsword as its easy to craft and has Knockback that you can easily enchant with more Knockback and keep building it as a main additional effect as an essence, you can also put some random Level 1 skills on a accessory that works together with it. There is also accessories and effects that has +1 knockback distance, so you can keep hammering them with no damage taken.
You can also keep crafting and building upon on the go and keep using.
Poison is also good with Cleave skills, especially if you can build a lot of it and put it on an a accessory.
6. my most hated part is the traps, you either got erosion down or worst it rises, so to be careful on that you must attack floor every time you enter the square, rising perception can fool you since it's not 100%, perception potion is limited, so hit the floor while being shot by archers or worse you got knocked and land on the worst spot.
There is a True Sight potion or whatever it is called that reveals all traps on the map including all buff traps, so you can use that in a boss run.
Another tip is your best crafting is done at your base, so it's a good idea to collect high tier materials and good scraps, which is why it's so painful that your storage is so limited. It's also good to have some elemental crystals so you can craft specific weapons reliably.
The reason being you can keep save scumming to get the right weapons with high enchantments.
The cat girl shop can also sell good scraps.
You also get a reliable scrapper after if you enter the second dungeon, so you might want to do a "crafting run" where you preparer high tier materials at base and then beeline to the scrapper.
Really the game only needs a scrapper and an enchanter to solve most of the problems at base.
Some weapons have good additional effects and skill you want to build upon.
Ultimately this game is about a blacksmith, how you solve your problems is with crafting and preparations, farming consumables, farming materials, crafting powerful weapons, enchanting powerful accessories and making the right preparations, it is only "grinding" in terms of needing to do that and you can get better and more efficient at it.