Razorclaw/doc

• The name of these creatures, their high armour, and their location where they found, may be a reference to the mirelurks from the Fallout series, which are crustaceans mutated by radiation, one of the higher level mirelurks is known as a mirelurk razorclaws. Many of the official tilesets seem to design the razorclaw like the mirelurk too.
• These monsters are quite rare, being found only in shipwrecks on the rivers but have high armor, and have a shriek ability quite similar to screecher zombies, their high numbers and armour make attacking razorclaws without preparation suicidal.
• They can be wiped out with the death of their queen, the alpha razorclaw, but her armor is even tougher, and it's hard to even get to her in the first place with her armored subjects.