The free weekend ought to give you a good idea of how the game should play since servers will no doubt be bustling.
The current 50% off sale is also likely to attract more users in the short term as well, which brings the game to $10 from now until July 26th.
Developers Caveman Studio have also recently released support for mods, letting users play community-made maps, create custom loadouts, and serve up new and interesting game modes that should keep you coming back for more. There are a ton of mods out currently, including fan favorites from Counter-Strike, Call of Duty, Splatoon, and more. Check them all out here. Contractors is available on Steam, the Oculus Store for Rift, and in beta on SideQuest for Oculus Quest.