Some floors generate with locked doors with no keys, no switches, and no secret rooms. The dev has known about it for 7 years and still won't fix it.
You can feel the first 5 levels, but after that not much changes. Your weapon is bigger and fires faster but still takes a ton of shots for some enemies. Your life total goes up but not your defense so you die before the message that you are hurt even begins to play. Any character that doesn't have full damage is a slog.
