Grimrock

seems there is a secret boss, but cand find where

I do not remember exact place, but it is secret button nearby the castle (south side of the map, where the entrance to the marsh is, there is secret teleport to the secret area and in THAT secret area is another secret button opening this area ). this will lead you to the marsh, where are summoning stones in the middle. I think it is clear what you need to do next

still cant find the button near the bog entrance (only button there is lowers those spikes to the chest with roguw hood but no button in that area)

edit nvm found it

edit2 the horn isnt working

tommy5000 wrote:still cant find the button near the bog entrance (only button there is lowers those spikes to the chest with roguw hood but no button in that area)

I know that button is on the kind of stone-ruined-wall, inside the secret (just few steps from the teleport). If you push that button you need go quickly back and walk trough opened passage, because that passage will quickly be closed again in few seconds.