These Experiments aren't too unbearable... on their own. The truth is, they only appear protected by a wall of Shildas. In the time that it takes you to wipe out that wall of defense, these guys will be shooting off Prismus. The damage can get extremely big, so it's up to you if you want to stick with the fight, or just flee. If you do stick with it, physical attacks and Forcea is the way to go. Tip: These guys will counter all your attacks with toxin, so have anti poison equpped