The bad: Instead of repudiating State debt, he went to the IMF and decided to let the long-suffering Argentinians pay for foreigners and foreign investment funds that had been stupid enough to buy debt obligations issued by previous administrations of the Argentine government.
Instead of slashing taxes all-around as promised and allowing the economy to recover on its own, he has increased various taxes (like on fuels and foreign currency purchases) and even plans to restore a category of income tax.
Instead of abolishing the central bank and allowing a free choice in money as promised, he tries to keep the peso alive—that otherwise would be quickly outcompeted and replaced by the US-dollar (and possibly, later-on, by other still better, more sound currencies)—by means of special short-time bonds, manipulation of interest rates, and artificially fixed exchange rates.
Instead of slashing welfare programs, he has expanded the welfare state—including the multiplied pesos for especially pernicious programs for the social fabric of a good society, like transfers to pregnant women and families for each dependent child. Instead of ending the war on drugs, he has intensified this abomination and even mocked critics on this.
Instead of balancing the budget by spending less only, he balances it with more taxation rather than with more spending cuts—favoring the accounts of the State over those of the productive people of Argentina. And instead of promoting and allowing secession and radical political decentralization, he has strengthened the power of the central government.