The visuals are great, it's funny and I like the idea of additive movement causing havoc and chaos between the players and I think you got a well rounded game (graphics, mechanics, audio, ...). Only the physics / ragdoll behaviour weren't polished enough:
- Sometimes I had the feeling to be randomly above the ground
- Trigger for beggar cut scene too small, pushing back the player and losing the cat prince (already mentioned)
- Random death at the stairs when not jumping on them
- It felt impossible to catch a rotating cat prince (he wouldn't drop back on the vehicle even when moving forward)
- I didn't really feel the impact of the dropping roses?
- Sudden speedbursts, losing the cat
If you work that out it would be more smooth and an really great multiplayer game. Maybe you could also extend the idea with mechanics like Octodad / Mount your friends for keeping the player in the game.