Great work as usual!

Some notes as I read through it:

• I hope that somewhere you explain the difference in consequences between rezzing with a soul gem and rezzing at a shrine. (In one case you go back to the beginning of the round, in the other case to the beginning of the whole level.)
• The stamina sentence under "ranged interrupt" leaves me a bit confused as to your meaning as written; it could use a grammar pass for clarity.
• A bit of English grammar you might want to check in general is the difference between commas and semicolons, although one can live without semicolons by using periods in their place. A comma usually should not be used to separate two INDEPENDENT clauses; violating this rule can cause a little confusion by leading readers to look for a dependency that isn't there. Examples could include the one in the previous point or the "combined ..." clause in the Maxus section".
• How long do sigils last?
• Do you have any numbers for what the sigils do?
• "port teleport" typo early in the Maxus section.
• GREAT point on the whirring blade mechanics. I didn't know that!
• It would help a lot to know which DoTs and other debuffs are or aren't purgeable.
• Great point on Seht's spiders powering other mobs. I didn't know that!
• Great point on stopping the blades in the boss fight. I didn't know that!
• The Queen's Advisor bullet point is missing a word.
• One problem with the slows in Arena 3; if they get too bad, you can't get to the sigils.

I'm stopping for now after the first three Arenas.

A few more reactions:

• Isn't it the case that the Arena 4 boss only has two phases, while the Engine Guardian in Darkshade 2 has three phases?
• Arena 5: What happens if you interrupt a troll and leave him alive? I usually interrupt with Crushing Shock, which also stuns and hence may give me longer to kill him, but that's early in the pounding process.
• Arena 5, Round 4: Why kill the two giants evenly?
• Some of the "If X, you will die" comments might be better as "you will probably die". E.g., Matriarch Runa, Platform 1.
• Matriarch Runa, Platform 2: Strictly speaking, it is difficult to kill a mob you can't damage.
• Arena 6: I always forget to turn off fast casting. If it's off, perhaps there's actually a chance to hit a pillar with a hoarvar grenade, but I wouldn't know that from experience.
• Killing the last mob of a round slowly not only lets you build ultimate or deweb obelisks, it also -- as @Joy_Division observes -- lets you heavy attack for resources.

Alcast wrote: »

Thanks guys, I added most stuff now to the guide.

Awesome!

Alcast wrote: »

@FrancisCrawford about the ulti and resource return on a last mob of the round. Where would I best put that so people can find it? Maybe in the Basics?

I odn't know how much more work you want to put into this already great guide, but it could use a more basic "Basics" section, if you want to take the trouble. Information and advice could include:

• The arena is located at one end of Wrothgar, ENE (or whatever the reality is) of XXX wayshrine. After the first time in, you can port to a wayshrine in the arena.
• Whether you're in normal or vet mode depends on your setting when you walk or map in.
• (I think this is true) You can have two copies of the quest active -- normal and vet mode.
• Rewards are Maelstrom weapons, of which the destro staff and bow are recommended in many builds, plus some other sets that people usually use only in niche builds.
• Unlike some other content in the game, Maelstrom Arena's difficulty isn't overwhelmingly concentrated on the bosses. Other mobs are a substantial challenge too, or add to the difficulty of boss fights, and there are also significant mechanics.
• A typical arena has 5 rounds. The last has a boss. The rest except maybe the first have minibosses. The first is easiest. The arena is completely reset between rounds. But all of these "rules" have exceptions.
• One needs to worry about damage, defense AND sustain.
• Common differences vs. dungeon/trial DD builds are VWXYZ.
• Defensive tactics to consider using are ABCD.
• Sustain tricks to consider using are EFGH.

Alcast wrote: »

For Runa, what do you mean you can't do damage?

You wrote " it can take a bit longer to take out the frost mage because it will stand in the water where you can’t damage it."

That passage also illustrates another point: Some (not all) of your advice about movement or position is probably meant for melee players only without explicitly saying so.