I can’t really say if the sniper is worth leveling as I haven’t used it much but the lmg and the axe both seem pretty good. Unfortunately there’s no class that focuses on axes so no one will really use it though. The shotgun however I have not used but it seems like it has absolutely horrendous stats? It does about 800 damage a shot at level one and 1000 per headshot which is actually insanely low for a shotgun. I compared its stats to an unupgraded level one heavy shotgun schematic I had and the heavy does like around 3400 something per shot and around 4100 per headshot so unless I’m missing something the fun is just awful? I haven’t invested exp into for this exact reason so if anyone has any answers about this I’d like to know as well.