It has been confirmed that it only tracks progress on Heroic -_- but you can get the achievement "Racing the clock" on legendary but that doesn't track for "Hardly Tardy" or "Mr. Punctual"
**There has been an update for it to no longer be in "Early Access" but that still hasn't fixed tracking for this achievement...**
Activate the helpful skulls:
-Catch
-Sugar Cookies
-Pain Train
-Bountiful Harvest
-Emperor
The par time for each mission in minutes are:
Mission 01: 5 - 12
Mission 02: 15 - 30
Mission 03: 8 - 18
Mission 04: 21 - 35
Mission 05: 21 - 35
Mission 06: 15 - 30
Mission 07: 12 - 24
Mission 08: 18 - 30
Mission 09: 18 - 30
Mission 10: 20 - 32
Mission 11: 20 - 30
Mission 12: 8 - 18
Mission 13: 20 - 60
Mission 14: 15 - 30
Mission 15: 20 - 33
Also for mission 6 make sure to put 1-2 Wolverines next to each Rhino and try not to use
for all units by accident and move them from their locations and get into the habbit of using Local units or Holding
to manage units.
Let me know if I need to add anything else, Thank You and Good Luck