I have been playing this warframe for many hours now and its really underwhelming. The massive health pool masks what is a rather poorly working warframe. His first ability gauzzels energy, even with a max efficiency + duration build. His 2nd ability recharges very little health, you have to consume a lot of enemies to give you back all the health back (added problem since his 1 is already an energy hog). His 3 is entertaining but in reality it does almost nothing., bad CC, bad damage and it requires two forms or resources (energy and consumed enemies). His 4 is probably the worst, I honestly don't understand the logic behind this design. Warframe is game about speed, power, mobility and control all of which is completely absent in Pulverize. This ability in its current design does NOTHING in the game, I can move faster and be more agile without this power. I can do do more damage and even control if just decided to melee. About the only thing it does better is take damage but that's not saying much since Grendel has a massive health pool + armor to begin with. Biggest issue with Grendel is the energy efficiency when we already have to deal with a 2nd energy resource.