I am tempted with this game, but I'm put off by the fact that I couldn't get to grips with Spelunky.
Is this essentially the same as Spelunky?
I did not like Spelunky much. I did not like the fact that with Spelunky the ghost prevented you from taking your time. It was a race. Also there's was no progression unless you got far and opened shortcut.
In Rogue Legacy you can take your time. Also unless you failed badly and died before getting money you'll always progress. You get money and buy new upgrade every game.
The progression is slow and you'll die a lot. Toward the end of a level the game becomes repetitive cause you grinded the level for 50 lives and the only reason you kill the boss is because you upgraded your toon enough.
I would say if you don't like the concept of raiding in mmo (dying a lot to upgrade your toon) you might not like Rogue Legacy. Personally i think it is a really fun game. I can't play it for long sessions though. The game becomes too much repetitive after 1 hour or so. I usually play it in short sessions of 30 to 45 minutes when i have some free time to play but can't afford to be stuck 3 hours in a game like Skyrim and such.