This is my first guide ever so sorry for sucking. This guide is beyond incomplete I just doubt anyone will read it, but this game is new and nothing is on it so I wanted to help. If anyone actually reads this just comment and I will polish and finish it.
Enjoy

Some weapons are plain bad and some are better. A little of this is opinionated but basically fact.

S tier- Falx, Trident, Twin Sacae

Falx has great reach stagger and 2 damage bu t you have to use both hands on this bad boy.

Trident is speedy with two damage and crazy reach but you have to aim it properly, this is the best weapon in the game because on top of all of this it is one handed so you can use net or shield at the same time and if you can aim it has speed and reach on other S tiers.

Twin Sacae has a little less reach than falx but is faster and you can parry so I would say picking between these two depends on your build.

A tier- Hasta, Securis, caestus

Hasta is the best A tier it is similar to trident except only one damage and is considerably faster and has more reach.

Securis has solid reach speed and you have a free hand. The only reason to use this over hasta is because of its wide swipe vs. Hasta's narrow poke.

Caestus are so ♥♥♥♥♥♥♥ fast it is unreal and awesome but they have no range and one damage, that being said they are still really good and definitely fun
F tier (never use)- everything else these weapons have no reach low damage and meh speed.

This part is very unorganized and honestly I lost motivation if anyone reads this guide I will fix and pour my soul into it.

Two hp beta cuck enemies always be very aggressive and rush you will always triumph. Three hp red shield ♥♥♥♥♥♥♥ wait for shield to drop and combo or roll through them. Dodge the sling throwers shot by rolling into it and take them down first out of a crowd. Four hp hasta wielder you have to flank or get behind. Four hp shield or champion tank guy you need to wait for shield to turn red and then bait and dodge and their is your opening.

In general be aggressive and take down the weakest enemies to focus on the fatty boys.

Elites- Elites aren't hard except the very first. Be patient bait out his shield bashes and get behind him to win.

Bosses-

Aetius- First boss isn't hard, do what you did for the first Elite and be aggressive, you will win.

Thaddeus- Fight him like you fight his normal enemy counterpart the blued shield four health guy, slow and bait bashes rolling into his attacks while flanking.

Othos- Two strats
1. Dodging the dogs rush at him rolling through arrows and slaughter him before he does you, low skill higher risk sometimes doesn't work.
2. Use his dogs as cover while occasionally killing extras and in between volleys get your damage in.

Alarcius- Simplest fight dodge occasionally but rush and melt him before he heals it is super easy.

Lucar- he is kind of tough. I recommend falx v falx for the achieve and ease, swing once or twice then roll, play passive and get those big wacks in.

Twin champions- Kill axe man first and be super aggressive and dodging only the latter part of his combo using crit to heal. Sneak behind his brother once he is enraged just stay behind and victory is yours.

Titus- Good luck

Almost every achievement is self explanatory but here are some special ones and tips

Quadra kill use trident or falx it will happen eventually.

Barrel Hater- top left middle left and right and bottom left of the hub or whatever break every barrel.

Special kills- To do the special kill of bosses achievements don't worry wait for endless mode.

Tips- upgrade your contracts right away and look at the helmets left of pit door and start working for them instantly. Blood upgrades that are best are the charge one, extra healing and not losing it when hit.

Thx for reading
Happy fighting