From the review on Helyna's blog:
John Mevissen: The Omega Voyager (read up to 29%)
Logan Sheffield needs money. The end of the world, the Omega Event, is coming (maybe) and he needs to survive, alongside his petty criminal friend, Freddie. What’s the solution? Time travel, of course, which has been a popular pastime once but now is a faded curiosity and perhaps also the cause of the apocalypse. But he will do it. He will outsmart the rules and twisty consequences of causality and time loops, and get rich. Or at least, he will damn well try.
The Omega Voyager was a fun one. Logan’s two-weeks-long trip to the past to support a university project (but in reality to play the stock market to his advantage) is the focus of the first 20% of the book, and although his adventures were aggravating sometimes, I enjoyed the way the book was playing with the anomalous or paradoxical effects of time travel such as the grandfather paradox, meeting yourself, or whether things are predestined or not (and what exactly and when causes their predestined nature). Then this section ends, and we’re leaving time travel for a while, then what I assume the main plot of the book will be starts, with another chance for Logan to play time to his advantage. This thread is somewhat of a consequence of the first voyage, but it still felt a bit disjointed to me. And probably on a somewhat more personal note, I just couldn’t get into Logan’s personality, even though I’m almost sure he is intentionally set up as a not so great person. So, even though I’m voting a NO for this now, I think there’s a lot of potential in the book, and I do wonder how the Omega Event will connect to Logan’s smaller scale journey. Time travel enjoyers can safely try out this one.