After calling Helldivers 2 "the best Starship Troopers game" in my review, we are again reminded that there is a pretty good Starship Troopers game out there already. Starship Troopers: Extermination is nearly a year old now, although officially only in "Early Access." This is why the latest patch, Update 0.7.0, is still working under a version 1.0 moniker and why only now are se seeing the class system in the game really coming to life.
But with that 0.7.0 update we are getting six new classes: the Sniper, Ranger, Guardian, Demolisher, Medic, and Engineer. Each carries with them their own unique roles, progression tracks, weapons, utilities, and perks. The weapons can carry over to the other classes so long as you achieve "Weapon Mastery" at rank 10. 0.7.0 also introduces side missions to ARC Slam mode, a new bug - the Bombardier, and more. The full patch notes are on the game's Steam page: https://store.steampowered.com/app/1268750/Starship_Troopers_Extermination/