Although Metal: Hellsinger isn't mechanically deep enough to satisfy either an FPS gamer or a rhythm gamer, if you like BOTH genres you'll really have a fun time playing it. The music is stellar, the movement is smooth, and the action is fun. When you're on beat, the flow state is incredible. If you don't like both genres, there's a good chance you won't be super into this one.

Difficulty is pretty well balanced, although for the most part there aren't any enemy remixes like you'd find in something like Devil May Cry. Usually, the enemies are just a little bit stronger and do a little bit more damage, but honestly the difference between the easiest and the hardest (unlockable) difficulty isn't very big.

The story isn't anything to write home about, but it's not bad. It takes a bit more of a back seat compared to the gameplay and I think that's probably the right choice. It's good that it's there, but it's not the main selling point.

One major point of criticism I have with the game is that the boss fight for each level (which are called Hells) is the exact design and requires the exact same strategy to beat. The only difference is the projectiles that are thrown at you and what types of minions the boss spawns. The final boss is quite different, but that's really it. I wish they would have put a little bit more effort in making each boss fight a bit more unique, with different designs and strategies on how to overcome them. Maybe even every other level having a unique boss would have been fine, but it does get pretty samey after the third time fighting the same boss.

The final boss music, featuring Serj Tankian of System of a Down renown, is also just not really that great. You play through the whole game listening to these awesome screaming and growling vocals, and then the final boss music which should be the most hardcore of them all is Serj doing his thing, being super weird, which is normally fine but here it just does not work at all.

Other than those two points though, I really enjoyed the game! Enough to get all of the achievements, in fact, which can't be said of many games for me. You can easily get that done under 7 hours, so the game isn't particularly long either, but you'll have a lot of fun playing it if you like rhythm and FPS games, particularly DOOM 2016/Eternal.