>>266380854
The main game mode is a roguelike where you're given random weapons and have have to move between supply points to get more weapons and items, and hold points to earn more points to buy them. Enemies attack the control points and patrol the map.

Look up 'take and hold' to see gameplay of the mode, but ensure the video is from the last 4 or so months, as it was more basic before then. There's also a few other modes, but none of them have much replayability.