Meeeeh I got stuck because I couldn't find the last ticket.
got the two in construction sites and one under the bridge.
It's cute and looks great but would benefit more from content, rather than 20 costumes!! the platforming is ok, could be more responsive(I don't know what's missing, I haven't coded a 3d platformer..).
But the most important thing is make the bike feel better. I didn't like how it drives. it should let you turn faster at low speed. mario kart drifting would be cool.
It's gonna be great when you expand it and give the townpeople quests and/or minigames. Cities are condensed with assets, but how about a rural station and map? then maybe you can help people get some veggies from the field and rescue a cat stuck on a tree for your train ticket.