I will allow you to explain how the Warlock's rain of fire and meet the beetles is tech-based.
Also, it would not be too much of a stretch to think that the apparent pseudo-magic we see in the game is actually a mage or several that focus/amplify their magic through devices.
Although, just as well, one could think that with this demonic technology also comes the ability to store a spell and replicate it. But it still involves magic.
