The Dink Network

I have almost reached the end of this D-MOD (as far as the walkthrough goes) and have rescued CThunik from the jail cell after leaving the bloody river.However,I am unsure of what to do next.In this area,I have killed all the frogbots,collected the potions and now it seems I have nothing which can be done except killing the zombie which lies one screen to the north of where I currently am(I am currently at the screen of the SAVE in that area).How do I go about from here? I cannot figure out how to kill that Zombie.He always manages to kill not just me but Skard too.I cannot get back on the boat too.

My stats(with current magic set to hellfire and current weapon set to dark throwing star) are:
Strength:14
Defense:12
Magic:21
Agility:15
Honour:23
Luck:37

Level: 16
Experience: 5142/25600
Gold: 20371

Magic available:
Fireball
Water
Confusion
Hellfire
Storm
Lightning/Thunder-strike

Items available:
Hand-punch
Herb boots
Scroll to prevent/cure stone magic(unable to read properly though)
Blue key
Light sword
Short sword
Dark throwing star
Lucky dice

Frog disguise,CThunik's sleep spell and Skard's attack works properly whenever called upon.

I play Dink Smallwood version 1.08 with PQ version 1.41 in Linux (FreeDink package)