I really liked this Serious Sam 4, it gets back to the old school game with the modern touch at the same time, fun weapons, moments, new monsters, new items to use that are fun too. Much better than Serious sam 3 that was too serious in a weird COD way. The only bad thing for me was the jump system to find out the secrets, it's a bit weird and could have been more tweaking.
This game is excellent ! especially the gunfight work which is amazing and make me thinking on the good game FEAR, gunfights, levels, lightning etc... if you like it this game is for you ! But don't expect any script ! here it's just playing maps and kill enemies with fun nothing more !
I bought it for few euros and I can say that for the price is very good. Don't expect a real RPG this a simple game and you can play it in "relax" mode. The world is simple as the powers and skills you will find but it's a great simple game to play with this small price.
I decided to give its chance and buy this game altough generally I don't buy any EA game and I can say that I love it ! The felling is very good, gunfigts are very violent in a doom style universe. As I said normaly I don't but an EA game but this one souds to be perfect, no bugs all is fluid and run perfectly. For those who loved FPS form the 90's this game is for you.