Get new Mark X Tacticus breastplate in Space Marine 2 community event. PROS is required
Mark X Tacticus breastplate is the reward for April Community Event. So, what you have to do to get it and why is the PROS required?

The Trygon, was introduced. Now, developers have one more present for fans. What is it? Thanks to April Community Event you have the occasion to get Mark X Tacticus breastplate. So, how to win it?
Get Mark X Tacticus breastplate in Space Marine 2
The Trygon update introduced many interesting elements like new customization options and close-range weapon – Inferno Pistol. The biggest attraction, however, is the new PvE Mission called Exfiltration. The main objective in this quest is to “reach the Adeptus Mechanicus Facility and assess the status of the Tech-Priest”. Of course, it’s not that simple. You will have to face a boss, Trygon, during this adventure.
Soon after this patch, a new Community Event was released which will last until 27th April. The goal is simple – community must collectively bring down 200,000 Trygons. The reward for everyone who takes part in this event is the Mark X Tacticus breastplate.
However, you must keep in mind that if you want to get the reward, you need to connect your game to the PROS . If you didn’t do that before, you can do it easily from the game menu (of course as long as it doesn't bother you, as in the past many players were not happy about this restriction). You can use a QR code to do that. Alternatively, reveal the code and press the tab button on PC (or its equivalent on the controller) for the window to appear.