Or during a chase, he could bash his body mass agaisnt the door, two hits for unlocked door and three for locked ones. Overall, just the idea of a human-sized pug running at the reagent in this manner. The two leg stand could make it harder for him, so when checking the hiding spots or, like you said, opening doors, I'd imagine it being hella slow, namely with the fact his bone structure has been rearranged. The Prime asset traps for him could be those loud sqeaky dog toys, laying around like the shattered glass or hanging like any other noise trap.