I was busy all of yesterday so I missed it. Shame
I did play it solo though and have some random notes/observations/feedback (not all about the new area). The new stuff has been added to the wiki. I'll also clean up the items page sometime (maybe...)
- It's pretty dumb that parrying an attack still makes you get hit by the statuses (for example, ancient viper slows/curses you when you parry attacks). Don't know if this is on purpose or not.
- The Travel option in the checkpoint in firelands does nothing.
- Firelands suffers the same problem as the Crypt. It's a huge area with extremely challenging enemies, that you can run right through and never fight a single one.
- Charred Ring is super cool. Only thing I'm wondering: does this work on the Flame Guardian's lava too? If so, loading this item would make the boss super easy. You could just lure him into the lava.
- I don't know how low you intended the stun threshold to be for Fire Elemental, but I'm stunning them with every single attack.
- In the fire pit area after getting the Charred Ring, the mountains interfere with your vision when moving near the bottom of the area.
- I'm still getting a targeting issue with the final boss. It's rare, but randomly he will target some unit outside of the arena with his dash attack and charge towards the wall.
- Those demons are actually super hard. Very cool unit type, absolutely love the animations you made. Although it seems weird for Demon Caster's spells to be weaker than the Warrior's? It would make more sense if the caster used both the fire wall and the meteor

- Soloing the new area is pretty much impossible unless you run through, considering all the dash attacks the new enemies have.
- Max level increase when?
- Waiting for charred ring CD after dying is pretty lame. Can reincarnating reset cooldowns?
- Why's there another promotion stone when you didn't increase the limit a weapon can be promoted?
- The design of this area is really clever. I like the little island with the two demons on it and the bridge thing. It's cool how there's the initial area, and then it expands to like 2x its size when you get the Charred Ring, even though it's way more dangerous to fight in the lava even with it.
- Please make a zoom command to adjust camera distance, it's not big enough for areas with huge longrange skills like this.
- Flame champion is super cool. No idea how to beat him yet

. Maybe this will be the only boss that I can't solo. Best attempt so far is 6054 dealt (terrible). There just aren't enough times when I can hit him. Even after the fire bladestorm, he's not guaranteed to let you hit him.
- The text overhead when you're using a bow moves to your location way too slowly. Instead of being smooth, it moves jerkily to you. Gives me a headache when using bow, please make the timer 0.03 seconds or lower.
Some videos of me cheesing the hardest enemies in the game with bow
Thanks a lot for your work on this game again. Really love the new content.