Sure.
All you need to do is copy the last line of this (or go to it in the script)

 ;######################################## LUCIUS
  ;####THIS IS MY HOME MADE RPG SCRIPT!#### LUCIUS
  ;######################################## LUCIUS

  if ($2 == evil) && (!$3) {
    if ($readini(mnycount.ini,$nick,EXP) > 225) {
      notice $nick 4You have beaten this level already. 
      HALT
    }
    set -u12 %rpgflood. [ $+ [ $chan ] ] ON

press CTRL+F (find/replace)
change:

set -u12 %rpgflood. [ $+ [ $chan ] ] ON

into:

set -u60 %rpgflood. [ $+ [ $chan ] ] ON

replace all (and make sure you do not have the bottom tickbox selected, so it only changes in the one script, not globally)

That should change the delay from 12 seconds to 60 instead, look carefully that you do not add or remove any spaces when replacing. (for each channel it is in)
It is only the rpg which will be altered like that, the normal reply triggers will have their respective times unchanged.

BTW for any and all who wish to see the beta of a new version rpg I am making called ChatQuest....
It has locations, pack items, hp and (incomplete)mp, shops to enter, dungeons and travel routes too.
try asking me here or in priv.