Enemies stuck behind wall (arctic stage)
Enemies get stuck behind the newly added wall (the one on the left) in the artctic stage if the player stays in the lower left of the arena for too long.
This bug can be exploited to reach absurdly high scores since
a.) The number of enemies coming for you will greatly decrease.
b.) Explosions can still take out enemies on the other side of the wall.
is this related to enemies flying in the air when wounded? I think they were able to do this by climbing up some of the obstacles.