Anarchy - if you don't want it to be an attack, it needs to be more symmetrical. Just shuffle and randomly deal out all of the cards, instead of you picking one first. Don't know if that makes it too weak, but it needs to say that to not be an attack.
Beggar - well, it is weak. I think it might be too weak, as right now your opponents are getting the bishop opponent benefit, which is IMO almost as strong as the +$2. I'd like it more with "if you put no cards in your hand, +1 buy". So it's like a weaker woodcutter.
Boom Town - I like that the first play doesn't give a card. But I think that it is too weak in multiplayer games without KC / TR. As in, it will be hard to get more than 3 copies, because you have to go for it if one player does to deny, but then nobody gets anything. I'd like it more as starting as +2 Actions, +1 $. And then just card for 2, buy for 3, and VP for 4.
Borough - Why does this cost $7? I like the concept, but this should definitely only cost $6 and maybe even $5, because it's not like opening with it is a problem.
Charlatan - I like the spin on Ambassador here. Although... it might play more like Cutpurse, as I imagine most times people will just discard. But that gets nasty in 4 player. Especially because unlike Ambassador it doesn't deck thin. So it probably would lead to a lack of progress in the game. So on second thought, I don't like it.
Construction - Strong, but I think it's ok.
Counterfeit - I think the reaction part is too weak, but I like the action. Maybe put the card on the deck or in hand.
Dark Arts - I really like this card. 5 VP for $7 is already a fine deal, and it can be used as an in game curser (albeit weak) makes it good.
Demolish - Price it at $4 and I like it. I mean... it seems as strong as Upgrade, so maybe $5 would be ok. Because this is a non terminal trasher that doesn't reduce hand size. How many of those are in the game right now?
Dilemma - I'd like it better as:
+1 Action
The player to your left chooses one for you to receive:
+$2, +1 Buy; or +2 Cards; or +2 VP
Having it so you don't know if it's non terminal or not is weird for playing. There is a reason tournament always gives an action. There is a reason governor always gives an action.
Enchantment - Probably alright, but maybe weak. As for the cost of 1P, you probably could have just bought the card, unless you get real lucky.
Fief - The reaction part is very weak. I mean, unless you have terminal collision, the +$2 is almost always worth more than +1 VP. Maybe set aside like HT.
Harlot - I like the card a lot, but it might be too weak. When in the game would you buy it over silver? It's kind of the problem Harem has... but more magnified.
Highwayman - Donald has said he tried Cutpurse that way, but any treasure was too brutal, especially in multiplayer.
Keep - Another original DXV idea that didn't work out, but I still like the idea of it.
Outrider - Maybe too weak. I mean like scout it really needs to draw a VP card... and many
fools people already think scout is the worst card in the game.
Pauper - This card is pure beauty. I like it.
Philanthropist - I have no idea if this is at all balanced, but I do like the idea.
Refund - is a super card. I mean, early you can normally trash estate + copper and still buy a silver. And with curses... it's a super card.
Refuse - I don't like this card. Often cards that are in the trash are curses, and if it hits them, then its a very overpriced chapel. Plus for it to be good, there needs to BE trash, so there probably is another trasher out. Which means the original action isn't all that good.
Reserve - I like the concept, not sure if it is worded correctly.
Royal Demense - I like it. It's similar in strength to fairgrounds, as in basic games it will be worth 4 VP, but with the right set up it can be an alternative to provinces.
Silversmith - Might be too weak. But then again, now that I think about it, it probably is comparable to smithy / envoy.
Utopian Revolution - I think this is too weak. I mean... the next turn benefit is small compared to the penalty of discarding your hand. And the attack isn't even as strong as a curser IMO.