Pokemon Sword and Shield: Guide to Upgrading the Sneasel Sword

Getting one is easiest and quickest on Highway 8's ice section

And we have a Sneasel

The key to getting to the razor would have been mastering the art of bicycle surfing ahead of time.

The primary task left to complete to make him into a heavy is to even him out, but it should be completed by evening.

If you haven't defeated Leon the Boss and aren't in post-game, a continual cycle will only occur in the wild region

You might do this in post-game.

One of the courses and the day/night cycle also effect the courses, 

so you don't need to wait until 8 p.m. to see if the game turns nighttime

When it gets dark, you can pay an uncommon sweet or fight to raise your SNAKEL