The best way to deal with that dungeon at low level is to stack HP and RCV with dual-element monsters. You're going to need a MINIMUM of 14,000 HP to clear the dungeon if you don't have enough dual-element monsters (and skill at making combos) to wear through the masks 1HP at a time before they hit you. If you ARE good enough at the combos, then you can theoretically clear the dungeon without taking more than one hit of 4000 damage -- nothing has more than 18 HP, and a full team of dual-element monsters can deal 12 damage per round, and only the Mystic Mask has a short enough cooldown to hit you before you can take it out that way. (And if you bring poison, you can take it out before it swings.)

At higher levels, stacking ATK and Two-Pronged Attack can pierce through the defense of the masks.

That said, my Wednesday Dungeon team is a Physical dual-element team with over 75k HP, because it's the more reliable option.

Zombie teams (Odin or ogres) don't work terribly well because you'll die if you ever come across a round with two monsters on the same countdown.

Argh, I don't have enough dual element monsters. T^T

You can probably get away with only having three. 9 damage per round will still take out something with a countdown of at least 2 before it can get a hit off on you. 12 just makes it safer because then you've got some wiggle room.

Mass attacks are helpful, but don't let building a mass attack keep you from clearing out junk orbs; you need to make sure you keep an influx of the colors you need.

well, right now I only have two, one of which I can't use. .-.

Ultimate-evolved ogres are good for the job! :D They're easy to get, easy to awaken (the skill boosts are nice to have, and you can awaken them before you ultimate-evolve them), have dual elements, and have LOTS of HP.

I beat the dungeon again! it was with a dark odin thingy! ouo

God team + a god with over 4000 HP (and has dual elements) and I can win!

*u* Coda give me your highest HP Dual elemental gods! muwahahaha

I need one more mask and i can evolve a Shiva! 8D I wonder if I can get it tonight >w<

So happy I'm getting to be able to do that dungeon <3

I couldn't do the rainbow dude yesterday =( he ate me... and I need a few of him

Hey Coda what is a good way to farm Mythlits outside the Friday dungeon? I can get their dub version somewhat easy doing normal dungeons, but those small little guys are next to impossible to get anymore. Suggestions?

Ah, thanks Coda! I'll have to probably level the red god I have or something, I need something that will give them a boost.

Mythlits drop from Tower of Flare through Tower of Nature and all of the first-tier Technical dungeons.

Dub-Mythlits only drop from Hill of Iris's Rainbow and Starlight Sanctuary -- near-endgame dungeons you almost certainly don't have access to.

This leads me to believe you're actually asking about the singlits and dublits in general. The singlits from the first-tier dungeons -- that is, Dungeon of Wood etc. The appearance rates are kinda low and the drop rates aren't great, but it's still worth farming them especially at half stamina.

Ahh I couldn't get a second rainbowy mask thingy yesterday ;o; buuuuu

Aw, poor DK. Hopefully you will next time you get the chance.

-tries to make her teams stronger- *-* i will be able to do that dungeon... with out an Odin... one day...

ILLU GIVE ME ALL YOUR ODIN-TACHI!

I LOVE the new features in the new update!

Uvos don't require memorizing monsters anymore; they're included in the normal evo fusion screen, and you get a list of options. You can keep track of what monsters you have that can get uvo'ed, and what materials they need, all from within the game!

Power-up fusion shows you what level the monster is going to end up, and how much excess EXP you're feeding it if it would push it to max level.

And then there's the new Best Friend feature -- you can only ever pick ONE best friend, ever! But your best friend's leaders are ALWAYS available to you, and you get to see THREE of their leaders, and you get 100 pal points for using them!

I know about the best friend thing and i'm fretting over who to choose Dx I dunno who to chooooose ;-;

I picked DK because I already had you faved. XD And that's all really neat! XD

@Coda
I'll have to look at the monsters again but from what I can tell from my team set up the best leader I would have for the ogres is Cinderella. .-.

Cinderella's not a bad choice, but the ogres are also Devil-type if that helps at all. Or you could go for an auto-healer.