Tips for the Swiss?

[ichi]

Probably has a lot to do with the valor/morale of the two armies. While SAPs can be quite effective against cav, if the Mongols had a high command star gen and high valor cav while you had low valor SAPs then with a little flanking you could get burnt.

ichi

[SIGNIFER,LEGIOVIICLAUDIA]

The pikemen,even the best of them(the Swiss),cannot face alone a heavily armoured cavalry force.Historically,as far as I know, the pikemen were combined with ranged units armed with arcebusiers or muskets.It will be also wise to use swordsmen to protect the flanks and the rear of the phalanx.