Files with hlk suffix are in most cases animations from Warhammer 40k: Dawn of War 2 real-time strategy game.
Software that open hlk file
HLK file extension - Warhammer 40k Dawn of War 2 animation file
What is hlk file? How to open hlk files?
File type specification:
File extension hlk seems to be mainly related to a special game animation format used in the Warhammer 40.000: Dawn of War 2 real-time strategy game by Relic Entertainment.
The default software associated to open hlk file:
Warhammer 40,000: Dawn of War 2 
Company or developer:
Relic Entertainment Inc.
Warhammer 40,000: Dawn of War 2 is a real-time strategy/tactical role-playing video game developed by Relic Entertainment and published by THQ for Microsoft Windows.
The plot follows the campaign of Blood Ravens Chapter in ​subsector Auerelia and their fight against Tyranid swarm.
List of recommended software applications associated to the .hlk file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open hlk file, edit hlk file, convert hlk file, view hlk file, play hlk file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with hlk file - Warhammer 40k Dawn of War 2 animation file
Click on the software link for more information about Warhammer 40,000: Dawn of War 2. Warhammer 40,000: Dawn of War 2 uses hlk file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
