Walk and kill genre of a game, it explores and interesting side of survival Level designs with metallic music as well as Aspects of introducing Armor, different set of weapons ammo packs and enemies.

Though After a while the game seems to begin going towards static type of style where the Player runs around doing the same style with quite similar levels, introducing a few puzzles, with a slightly introduction to Traps where if walked on passes Enemies from every direction of the level making / forcing you to back off to the initial location you have come from, I think for players who are slower the music can become one of the biggest annoyance as it generally keeps repeating through out the levels, especially when the user is trying to solve puzzles and failing them while having nothing to shoot and having to walk back and forth within the level until getting to the end goal of doing objectives to unlock the level's door to finish the level and get yourself to the next one.

The Game usually Saves each time you leave the level which is awesome and fairly enjoyable for everyone. As well as respawning of enemies when they go exploring the level the second time, when they have missed specific objects in levels.

Enemies :

Some of the enemies with projectiles cannot be dodged, making you take health damage or losing Armor within the level. 

Problems with Armor : The feeling of Either your Armour suffering for the amount of projectiles losing it and having no more of them or having so much Armour, that there is nothing that can be done with the for a while, making the feel of being spoon feed when we are not hungry but not giving food when we are hungry.

Though other than that this is a lovely game and the changes of Weapons when changed as well not only in the Ui but as well as the change on the character is a good addition to the game, know that I am shooting a different Weapon as well as weapon change with a scroll wheel is a life changing experience for new player or older players Making it more fun as well as fast to swap according to the need of the situation.