Come on and slam and welcome to the jam. The Slammer explodes on impact, dealing no damage to the terrain, and then jumps 90 degrees into the air, during which it can be influenced by barriers, portals, x2, wind and can hit targets. If a portal is at the high point you might land beneath the other portal and miss. Once it lands, or better slams back down at accelerated speed it shows its true face, dealing the larger portion of the damage upon a big explosion area.