Obligatory "not a orblike player".
I played this the last time during DD49 and managed to get until the boss in the 2nd floor with the red light. Well, today I managed to get to the 5th floor and kill my first 2 sun cultists. On that floor no amount of save scumming could save me. I was all out of potions and only had a 1-7 scimitar and 3-5 shield.
I'm still not sure if I'm playing the game correctly. I try to clear the whole floor, pull the dudes if possible and avoid ranged attacks. But I always end up taking too much damage. Sometimes I find myself standing there and just hacking away at 5 dudes. Probably not the best way.
Overall extremely polished and fun! I'll give this another go later. Maybe try a mage character.