Cepheus brings his blade down on Derris' back, but a slight scuffle of his foot means that what would have been a fatal blow is instead only a nasty gash along Derris' back, as he turns to face the gnome.
"...what the?"
The gnome is now looking down the alleyway - there are a total of five goblins, all wearing spiked leather armour and carrying viciously curved swords and spiked shields, except for a cloaked goblin, who carries a massive (for a goblin) curved sword with two hands.
Initiatives and first actions, please.