Hey there,
Sorry I've been ninja in the last few month glad to your still active! I have been busy on my game project 2 and it's starting to take form. I would say like Temmieneko, there seems to be a lot of organic enemies for now so maybe an enemy that is partially robotic or like a armour suit like yours but with a plague inside it a bit like infested Terran in Star craft would be cool.Or a mechanical robotic arm/crane all tangled up with plant vain stuff around it.