Level 10 - prison key?

[VisualDeadlock]

Ok, completed i think all of level 10, even open the treasure door for the bow, woot! (has lower attack power then my xbow from lvl 6 though?). Anyways, I have a prison key but don't know where to use it, any tps?

[VisualDeadlock]

ok nvm, think i found it;

SpoilerShow

used in level 12 to open that door

Level 11, I skip?

[VisualDeadlock]

Nm again, I found how to get into lvl 11 without going the "sealed" way