Thanks again!
- Ok, it should be Adventure mode;
- Artifacts can be found only by opening treasure chests, and are announced with a huge box UI entitled "Artifact Found!"; any other thing you can find in the ground of a dungeon are consumables (potion, bomb, time rune, key) and currency (4 colour type coins, gems and dark matter);
- Yeah, i noticed that people is not paying much attention to the compass in worldmap so i'm currently boosting a lot the UI in order to make sure a player will be bound to notice it.
- I see, i'll consider a button to enlarge/shrink the dungeon minimap, thanks!
- Ok, coins can be used to shop consumables in cities, or they can be used in the inventory to upgrade your weapons;
- I think i got what it happened here... there's a flaw in the resolution of WegGL version that won't show up the boundaries of a battle screen, that means that you won't see the UI that shows you/the enemies can escape from battle when crossing that red line:

In the downloaded version it can be seen, maybe even the current web version, at full screen should be able to show that line on the screen;
- Ok, the spinning needle in worldmap only refers to worldmap position, there's no connection to your position, while inside a dungeon;
- So, about the "black artifacts", in the screenshot i noticed only those 2 things:
this is the "enter city" icon, and clicking it will open the city UI;
those instead are dark stains, they appear and enlarge when you pass through a tile in worldmap, if you pass through the same tile more that x times, after y time has passed... something will happen;If you're talking about anything else, related to that screenshot, then i have no idea what you're talking about @_@;
- Yes they give exp and coins and potentially they can make you level up, though it's quite unprobable... for example in a lv1 dungeon, enemies give 2 XP; the dungeon boss gives 20 XP; the treasure chest gives 200 (or 250, i don't remember) XP, this is what i mean when i say it heavily depends on treasures gaining XP. To level up from lv 1 to level 2 you need 300 XP. In Adventure mode the XP gain is 3x and artifact chests is 6x;
I'm definitely glad if you provide further QA in future! While you say it's free, you still call it offer... why? I mean, i don't think it exists any developer who would reject a free offer of testing, especially when it's quite detailed, unless i'm missing any implication.
The way you write your feedback seems professional and seems to follow a sort of template... could it be you're practicing to become an actual professional QA tester?