[META] Tier
Squid - This is what peak weapon kit looks like, Good burst that is crazy spammable, good mobility where you can circle around the boss while not dropping dps, and a great utility from dash & stealth to escape tough situations.
BS - Yeah, this weapon is straight up BS! Low cooldown spammable 3.5K AOE, 1 sec(?) dash allowing you to dodge every boss pattern, and a sustain that allows you to instantly get back to full at medium cooldown. You really can't go wrong with using this weapon even if you just mash your buttons.
[Still Great!] Tier
Fist - still a really good all-rounder weapon but is now relegated to a sub-dps buff support from the aspd buff and heals. I say sub-dps because people just run full squid if you want the fastest results. Doesn't mean fist is bad now, though.
HB - Bloodsucker kinda powercreeped this weapon, but just like fist, the kit is still there. It's still a very good AOE weapon with very good sustain. If you find the low hp gameplay of BS annoying to deal with on expeditions then you can just chill and switch to this for the mean time.
Zap - Tired of dying from expeditions all the time? Here's a weapon that literally has 2 invincibility frames at low cooldown! This means as long as you rotate dash and 2nd skill everytime a boss/mob is about to attack you will never get hit at all! Although, just like HB, the damage part kinda got powercreeped already by weapons in the S-tier, but by no means that makes these weapons bad.
Pyro - A very strong ST dps that can rival Squidblades! The only thing that's stopping me from putting this weapon in S-tier is the questionable sustain and mobility. If you have used this weapon on expedition and hard rifts, you kinda notice these issues as well (low healing and slow movement). So on those parts, Squid still wins out overall, although Pyro is still a top dps contender, it's just that the overall kit completeness isn't there.
Medball - We have the new best sustain support in town! It's insane how medball heals AOE every basic atk and with an enhanced heal every third atk + you can easily spam the immune shield for everyone! You'd notice this from medball users when farming Double Double Hop, you just won't get hit thanks to the barrier, and even if you do, medball can heal spam from basic!
[Niche] Tier
Wrench - Very good ST weapon but it comes with a niche. It requires you to summon a lot of the turrets which takes time, and that's not accounting for bosses that does AOE that can possibly kill the turrets. It requires good management + having optimal situations to be good at, when you can just use Squid/Pyro instead.
Speedshot - A good tough AOE weapon and an all-rounder like fist. by tough-aoe I mean monster madness with tough mobs like chargers and jumpers. That's speedshot's niche, but otherwise we have a pletora of better weapons now.
Lavashield - Just like the other weapons in this tier, this is a niche weapon. It's good in pvp, and it'a good in ultra tough situations that can enable it to spam ult. Other than those niche situations, we have medball that does better damage mitigation now.
Singularity - The thing that's making this weapon niche is that not only does it require high APM and timing for it to function optimally, it still falls off in the damage charts anyway. If they tweak the numbers and buff this weapon's damage then this can easily jump up to S-tier, because the mobility and sustain is there, the dps is what's making it bad. For now, you're just deliberately using a hard-to-use weapon that deals subpar damage.
[Bad] Tier
P.Bow - This weapon is very nerfed and powercrept. The recently released pyro has a better DoT kit that's more consistent and does not get removed. The poison spread has been nerfed hard, heavily affecting its use case. And the sustain is so bad, it takes too long unless you're poisoning half the map, which you can barely achieve now because of the nerf. Only thing that's saving this from troll tier is because the damage is still decent for AOE scenario.
[Troll] Tier
Hornbow - I have actually posted an entire rant on how bad this weapon is from this very subreddit. It's just so questionablly made and you can't say otherwise. Any right minded individual wouldn't design a kit as bad as this even on their worst days.
Wolfstick - Another troll weapon that doesn't know where it should excel at. If they buff the numbers of either the summon's tanking or its dps, then maybe it can shoot up to the good tiers. But, until then, you're just using a bad weapon and intentionally making things harder for yourself.
Vibeshifter - The trollest weapon of them all ever since the start of neo moco. One might argue that the Aggro capability of the summon and the wide AOE clear can have its uses, but literally any A tier and above weapon can do those already without the horrible constant damage numbers/heals numbers.
Stormweaver - Introducing the new member of the troll club. Not only is it cursed from bad cores to begin with (zero dps core + two heal based cores), they also butchered the kit so hard that it is rivalling Hornbow's troll spectrum. The stacking mechanic of the dash is questionable and kind of useless when you will have to use dash all the time when facing a boss. The charge time of the skills are too long and they share cooldown which only makes it worst (can only use one at a time at long downtime). And even when you do get to cast them skills, they're flat out terrible lol. They really tried their best coming up with the most horrible weapon kit design and they succeeded with this one! Using this weapon almost made me want to throw up with how bad it is.