Even the basic gremlins look like they are putting out some pretty nasty damage, I think it's definitely going to be pretty tough.
Yes i have seen the video.
Also my main fear in those games in what happens when you level up or you get the better weapon.
It's one thing to just give me more (combat or otherwise) options or a slightly boost to my already abilities and another to make me a superhuman kill machine.
"Hey look i found the Holy Super Void Destroyer Sword now we can clean the whole level without a sweat. Yeah let's jump right onto this pile of 11 goblins their weapons can even get through me" type of thing.
In SG when you finally got the advanced weapon sometimes you only got one more die and not a weapon with infinite ammo or blast or i don't know what more.