There should be different spike explosions that can be purchased or unlocked. The explosion should be determined by whoever plants the spike. Some ideas would be a fish bowl, snow globe, or zombies/demons chasing you that get stopped by a f...

As you can see he moves closer to the wall then peeks. I thought you're at a disadvantage when you are closer to the wall because enemy sees you first before you do. If it was me I would always peek further away from the wall. In wh...