I really enjoyed Hellblade - originally I played an hour about a year ago and quit due to the combat. Tried it again this month and realised there isn't too much combat haha.
My favourite part would definitely be the audio. The voice acting, sound effects, music all worked well together.
Collectibles were fun to collect, as you heard stories from Norse mythology with each one you collected! I did miss only one and near the end had to load someone's save to get the achievement as I'd have to replay pretty much the whole game for it :(
The game doesn't have chapter select, which is a bit of a bummer. I feel like it could be interesting to replay sections with Chapter select, especially for the end battle and wanting to feel like a badass in combat :P
Hellblade has a Photo mode, which is always a plus for me in games, I took a fair few screenshots, most I didn't publish. The movement in Photo mode was a bit limited, but the effects provided are really cool.
The only negative for me other than no chapter select would be the combat - the movement was a bit janky, and you had to use dodge constantly to be able to move around which could be frustrating. I also had problems where a dodge/block wouldn't register to my increasing frustration!
I did like however the focus mode, and for minions essentially you could block their attack at the last second and then instant kill them in retaliation. This really shined in the last battle.
I really recommend the game if you enjoy a combination of a story that doesn't overstay it's welcome, Norse mythology, puzzles and great audio. (It's recommended that you use a headset - do it! I tried both to see, headset is definitely worth it)