1) All gunked up 2) Badly made 3) Caked with dirt 4) Caked with gunk 5) Characterized by obscenity 6) Contemptible 7) Disgustingly dirty 8) Filthy 9) Inferior in quality 10) Nasty 11) Worthless or useless 1) Lousy 
Cruddy is slang for unpleasant, inferior, worthless.
covered, encrusted, or saturated with dirt, grease, or other objectionable substance; filthy: It gets the cruddiest work clothes clean. · worthless or useless; inferior in quality; lousy: a cruddy, broken-down car. · extremely disagreeable in character; nasty; contemptible; low-down: Keep your cruddy remarks to yourself.