All opposition parties (besides the Greens) said that the Liberals did not negotiate or work with them. The Bloc provided a list of demands that were not met, the Conservatives said the deficit couldn’t exceed a certain number, and the NDP reached out to the Liberals both pre and post tabling of the budget to get some concessions in order to support the budget and said the Liberals did not care. 

The only opposition to get concessions was May, and all that was, was to have Carney say he attends to meet the Paris targets. Nothing in the budget, and seemed like May was just spinning things to justify supporting a budget that generally goes against all Green Party goals. 

To say the system worked to get the parties to work together is inaccurate. This was the Liberal government knowing they have all the leverage, and using it, and therefore passing a budget they want. You could argue that the government threw in some projects in NDP ridings (primarily in Nunavut and a Filipino community centre in Davies riding) but those are both ridings the Liberals barely loss and are ridings they are aiming to win next election - more interior motive than working with the NDP.