I've played several wastelands/apocalyptic games, but the only real fun, gore and entertaining - is Bulletstorm.
https://steamoss.com/sharedfiles/filedetails/?id=1558159508

• getting drunk and shooting enemies,
  
• launching/directing your bullets shards and grinding through enemies. Torture them the way your inner sadist favour *_*
  https://steamoss.com/sharedfiles/filedetails/?id=1562873396
  
• building up combos with your guns and enviromental kills (so-so-so many options!),
  
• controlling a giant RC "toy" Godzilla!
  
• then flying in a copter and shooting even a larger alive kaiju!!!
  https://steamoss.com/sharedfiles/filedetails/?id=1562873698
  
• escaping from falling dams (my favourite part), falling skyscraper and aggravated mutants - all of these in a fast pace and tense music!

No, you dont need to look for collectables! Run, shoot and have all possible fun!

Oh, the main character is a witty-trouble boy, listen closely to his jokes and quotes.
The huge minus for not including story coop. There's challenge maps where coop exists, but they lack all of the campaign excitement.

I've played several wastelands/apocalyptic games, but the only real fun, [strike]gore[/strike] and entertaining - is Bulletstorm. https://steamoss.com/sharedfiles/filedetails/?id=1558159508 [h1]The game is quite linear shooting blast-through experience, containing all sorts of crazy parts: [/h1] [list] [*]getting drunk and shooting enemies, [*]launching/directing your bullets shards and grinding through enemies. Torture them the way your inner sadist favour *_* https://steamoss.com/sharedfiles/filedetails/?id=1562873396 [*]building up combos with your guns and enviromental kills (so-so-so many options!), [*]controlling a giant RC "toy" Godzilla! [*]then flying in a copter and shooting even a larger alive kaiju!!! https://steamoss.com/sharedfiles/filedetails/?id=1562873698 [*]escaping from falling dams (my favourite part), falling skyscraper and aggravated mutants - all of these in a fast pace and tense music! [/list] No, you dont need to look for collectables! Run, shoot and have all possible fun! Oh, the main character is a witty-trouble boy, listen closely to his jokes and quotes. [b]The huge minus for not including story coop.[/b] There's challenge maps where coop exists, but they lack all of the campaign excitement.