Setting aside ex-parte

Now since you have got the decree and judgment in your favor even though it is an exparte judgment, you may proceed with the filing of execution petition to execute the court judgment given in your favor as per procedurfres of law.

You can ask your advocate about all such further process. 

Are you the plaitiff or the defendant? if the plaintiff, file the EP. The plaintiff need not be concerned about the remedies available to the defendants.

 Why You being plaintiff/ decree holder are worried about defendants. You at the earliest file execution petition in court. 

Defendant may prefer an appeal  against decree and judgement passed by  court or file petition to set aside ex-parte decree u/order 9 rule 13 CPC.

You have not stated qua your locus standi  in the suit ?

What is the Will doing here?

The trial court may not entertain your petition to set aside the exparte judgment because you were set exparte for not complying with the court order to pay the costs for delay in filing the written statement.  The delay to pay the costs can be condoned by high court by filing a revision petition seeking to extend time to pay the costs awarded by trial court to accept the written statement filed belatedly. 

First of all you have to restore the suit only after that you can think about introducing newly discovered evidences to defend your interests in the suit

Thwe Ex-Party judgement is enforcable in law in all respects.