Walkthrough tips, Campaign discussion [Heroes 5: Hammers of Fate].

question: they say that for Heroes, you don't need to install patches 1.1, 1.2, 1.3 – you can install 1.4 directly, as it combines them.

That's correct. Patch 1.4 can be installed on any version of the game. And it's also recommended to install 1.41 on top of it (it's only 10 MB) as it fixes several unpleasant bugs (game crashes when killing phantoms/gates), and also allows you to play on ubi.com (due to changes in statistics tracking, playing with other versions besides 1.41 is now impossible).