nest is allowed but no other buildings. My favorite combo is tizik skimander. tizik makes skimander attack super fast and adaptable makes skimander deal more damage the faster it is than the enemy its attacking (I assume you can see why this is broken). Also another REALLY important tech is to try and use your super RIGHT BEFORE the enemy boss uses their super. This is not too difficult with such high DPS and stops the enemy super animation which saves a lot of time and my 6:39 and my friends 6:33 both use it. I havent tried this strat vs the calamity boss, I imagine its even more precise bc of the extra hp but ill go home and gove it a try