It feels like some core mechanic is missing, and i'm not sure where you wanted to go, were you aiming at time constraint ? or some monster following you, catching up with you when carrying something too heavy ?

The controls are a bit buggy, seems like you don't handle the key release events, when you start walking in a direction you won't stop unless all keys are released, sometimes you can without releasing go from horizontal or vertical to diagonal, but it makes the movement kinda hard

Otherwise the concept is interesting, the fact you can't get the previous item you had back (if it's not a bug) could be an interesting mechanic, i wonder what are the things you didn't had time to do, some bugfix and some more work on gameplay and could be good !