Destiny developer Bungie has laid off another 220 staff, representing roughly 17 percent of the studio’s workforce.

In October last year, the studio laid off 100 staff from its then 1200-strong workforce. That means Bungie has laid off around a quarter of its workforce in the past nine months.

The news was shared today in a blog post from Bungie CEO Pete Parsons, describing the decision as “some of the most difficult changes we’ve ever had to make as a studio”.

“Due to rising costs of development and industry shifts as well as enduring economic conditions, it has become clear that we need to make substantial changes to our cost structure and focus development efforts entirely on Destiny and Marathon,” said Parsons.

“These actions will affect every level of the company, including most of our executive and senior leader roles.

“Today is a difficult and painful day, especially for our departing colleagues, all of which have made important and valuable contributions to Bungie. Our goal is to support them with the utmost care and respect. For everyone affected by this job reduction, we will be offering a generous exit package, including severance, bonus and health coverage.