The Monsters spawn behind you.

[ProBert]

After farming the last underground floor for two hours i must say that i cant play the game anymore at this time because of the massive spawn of monster behind you.

I clear a room and during i kiting the monsters of the next room and getting back to the room, its full of monster (robots).

I´m getting down to my dungeon and no monsters are there for four or five rooms. I went back to the stairways and all is full of robots..

I dont know if this is so wanted or a bug but its pain in the ♥♥♥..

[narf03]

1) make new path, dig the wall.
2) build wall (with rock or dirt or anything that u mined) directly on them, or cut their path.

you must have enough wood with you, u can easily get access of stone underground, you will need to constantly crafting pickaxe.