TL;DR: great art style, cool atmosphere, and zero thought put in level design. ZERO.

Bulletstorm is a game where:

The action is super fast, yet you get like 20 seconds of it before another scripted cooldown segment.

It's based around quick movement, yet a knee-high wall is an impossible obstacle because you can't jump, and you can climb only very specific objects.

It's based around quick movement, yet most levels are short straight lines or super tiny arenas.

It encourages trick shots, yet there are so few enemies at a time that you can barely experiment.

It's based around trick shots and scores, yet you have an AI partner that often steals your kills. I CAN'T EXPRESS HOW ANNOYING THIS IS.

It puts emphasis on skills, score and style, yet often a crucial boss-like event is a one-button QTE.

It paints itself as fast-paced and action packed, yet there are MINUTES where all you do is listen to dialogue and watch cutscenes.

It's fast, and not a cover shooter, yet it forces you to hide behind chest-high walls to regenerate health.

Overall, it's like they had great ideas, but some higher-up told them to tone them down and put them inside the most generic cover shooter ever made. This game has all the most annoying tropes of Gears of War era action games.

I wish it could just break free and offer unlimited fun with its awesome combat, instead of giving you the smallest doses of entertainment. Seriously, action bits are so tiny it's hilarious. And the levels are just so incredibly simplistic, literally straight hallways.

Whenever I start to have fun, the game halts everything to show me its oh so precious story. The most annoying is the opening, with an awful turret section (of course!), a pointless but visually striking slow walking sequence, a QTE that should've been just a level, then a short burst of action, and a lot of waiting for other characters to open the door for you.

Frankly, this is perhaps the most schizophrenic game I played. It doesn't know what it wants to be. I want to love it, there are so many great ideas. But I see why it flopped.

Bonus points for this Xbox 360 game having a super uneven frame rate on base PS4, which plays Doom Eternal without the slightest hiccup.