The dual-duty/constant-shield choice is a tough one. There are a lot of good dual duties for beginners, but less helpful ones once you get into higher battling levels. I started out using dual duties, but as I progressed, I stopped using those and starting using the constant-shield method. It's up to you; there are benefits and drawbacks to each.
If you're doing 1-P, though, you should definitely look at the Battlepedia's Challenger Guides
to find out what weapons your opponent has. A lot of opponents, like the Space Faerie, tend to deal one type of icon, so you can make sure you're using shields or dual duties that defend that type. It looks like the Black Pteri deals a lot of air and dark icons, so you might want to get Gilded War Hammer
or Parchment Cloak
(if you meet the intel requirement). Shiny Shoal Shell Shield
would give you some protection, too. Golden Compass
does defend dark, so it's probably more useful to you than some other dual duties. If you can afford it, Hanso Charisma Charm
would be a good upgrade, but it's a rather large investment. Your Parasol of Unfortunate Demise
and Oversized Maractite Rune Sword
aren't helping you much in defending against the Black Pteri, so stop using those. Either switch to more useful dual duties and shields or use stronger constants and not worry about defense.
Since you're level 25, you could get some more faerie abilities. Faeries are pretty cheap now that most people have the abilities they want. I suggest you invest in getting An Icicle, which is a level 25 ability. It gives you 6 water icons, and you can use it as many times as you'd like during battle. It's like an upgrade to Static Cling. Those extra 3 icons each turn could make a difference for you.
Freezing can be incredibly useful in the Battledome. When your opponent is frozen, they can't use weapons, which means they can't defend against your attack very well or cause you to take much damage. (In my experience, frozen opponents can still use faerie abilities, so it's not always a guarantee, but it does mean they can't use their weapons.) If you use a 100% freezer like H4000 Helmet
or Scroll of Freezing
, your opponent will be frozen on the following round, so you can hit them really hard with a constant and a bomb, since you don't need to use a shield. (Bombs are 1-use or once-per-battle weapons that are best to use when your opponent is frozen. They tend to have a high number of icons.) If you use a percentage freezer like Snowglobe Staff
or Randomly Firing Freeze Ray
, there is only a chance that your opponent will be frozen. You'll have to check the combat log to see. If they are frozen, you can use your killer combo, but if not, then you can try again.
There are some faerie abilities that mimic freezing, like Lens Flare and Warlocks Rage, where your opponent is actually frozen during the round you use it instead of during the following round like traditional freezers. However, you need to be at least Level 50 to use those, so you don't need to worry about it yet.
Speaking of bombs, you might benefit from picking up some 1-use 15-icon muffins like Robot Muffin
. Shooting Star Muffin
and Darigan Muffin
are good options for the Black Pteri because he doesn't defend against water or dark very well, so you'll get at least 10 icons through.