The Greens didn't win any seats in the House, so they're still powerless.
But yes, the Tories won't be able to do much of anything aside from working on government accountability and crime in this Parliament (which were the only things everyone agreed were problems in the first place). They can't do anything involving finances without support from the other parties, because if they get defeated in a vote on a finance bill, BAM, there's another election. Since no one wants that, they'll have to tread extremely carefully and govern pretty strictly from the centre. The social issues will end up being determined on a case-by-case basis, since the government can be defeated on those without falling.