my guardian is only level 21 currently, but if I get time, it might be the right level on sunday or monday for a dungeon run.(I also recently found out about boss style mobs that sometimes spawn outside of dungeons, how common are those?, The caledon forest giant worm was fun.
Also, with regards to the flamethrower thing, what stat(condition damage?, I know that one boosts a guardian's fire attacks) boosts damage from one?