seems to be some issue with the jump not triggering properly when running - its happening to me a lot (using arrows for movement)
Viewing post in Driar Revival (NES Port) comments
Hi, that problem is called "Ghosting" and it's a limitation that most keyboards have. With WASD + SPACE it works fine.
Anyway, in a next update I will add the keys from Z to M so you can use them to run. If you play with the cursors using the M key to run will solve the problem (I suppose more combinations will work).