Please help me in four things

1) I have cleared the catcombs but Insane healer sanity is not returned

2) I have got my second teleporter stane also but while getting the stone i am not able to get throught the locked door which lies after the dead man

3) when i enter the grave in the grave yard near the farmland the save button gets disabled how to activate that button

4) which is the best character to play with

help?????

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