not really agree with this, but it can be a variant solution.
So let's have a crack at it:
1st level. Extra subclass level feature:
Drop heavy armor for two extra skills from the list of:
Athletics, Acrobatics, Stealth, Investigation, Nature, Animal Handling, Insight, Medicine, Perception, Survival.
3rd level:
2 skill proficiency and 2 expertise for skills in 1st level list
ignoring natural difficult terrain
+60ft darkvision
7th level:
+10 move speed
climb speed
swim speed
10th level:
+2 expertise for 1st level skill list
hide as Bonus action
15th level:
As Bonus action, turn invisible for 1 round, prof bonus per Long rest
18th level:
Blindsight 60ft