35.........but Trampinch must know the HM strenght in order to evolve
Flygon is the fully evolved form of Trampinch, I don't know what game you are playing, but in Ruby/Sapphire or Emerald you can catch a Trampinch in the dessert north of Mauville. You can also get it in Pokemon Colesseum by catching a vibrava witch is the middle stage of Trampinch and Flygon at the Pokemon lab. Can't help you if it is another game you're playing.
Route 228 (use poke radar).
It is suppose to evolve at the Level of 20,but if you want it to evolve later it can evolve anything after it is at Level 20.
It will evolve by level. Teddiursa will evolve into a Ursaring at level 30.
They evolve at level 36
It will evolve at level 36.
They evolve on level 40
it evolve on level on 64
if you dont let it evolve at the required level of level 20. itll try to evolve at every level following.
To evolve a Sandshrew level it up to Level 22 and it will evolve into Sandslash.
Pikachu do not evolve by level. They evolve when a thunderstone is used on them.
Kricketune does not evolve, but a Kricketot will evolve into Kricketune at level 13.