Scurge Hive can't get passed Jormungand

System: Nintendo DS

So I was playing the game as normal with no issues but once I get to Native Specimen Beta-267 Jormungand when I attack it and lower its health down on the first stage the whole games just freezes and I can't continue I am wondering if its just me who is having the issues on my end or if its a whole emulator issue so I hope someone can help