At 50m, it is very, very, tough for Pol. A serious Secco has like 20m AOE (opposed to Pol's 1-2m), and contact with his mud, will cause you to liquify too. Like if Secco makes the locale muddy, and Pol begins to sink, he will melt. Bruno got by it because he's undead, but if Secco plays range Pol can't do anything.
Though, if Secco tries to CQC, which he seems to lead with unless pissed off, Chariot would probably have the advantage, he's weaker physically yeah, but the blade do be a blade, it's gonna cut him like a sword would a normal person. The blade might melt a bit if Secco tries to block it or they fight underground but all he needs is one good stab, and Chariot luckily has armor, which if Secco and Chariot get into it, which actually protect him and Pol from melting or the blows for a bit.
Of course if Pol doesn't kill him quick, Secco will snowball fast via melting, ******* up the enviroment, and so on.