Sunkern evolves via the sun stone.
it evovles at level 18
Sunkern evolves by giving it a Sun Stone, not by leveling up
Darumaka evolves into Darmanitan at level 35.
Purrloin evolves at level 20. -Hope this helps! ;)
You have to use the sun stone on sunkern at any level but it is hard to get a sun stone in soul silver.
Sunkern into Sunflora
level 40
Level 30.
Level 32.
On level 20.
level 26 ^^
at level 32
At level 59
Level 16.
Level 16
it will evovle at level forty-five
it evovlve's at level 24