Step 1
Clodsire used Earthquake! (-3 EN)
Crit (1, d24): 14 (No)
(10 + 4 + (6 - 9) - 1)*1.5 - 11 = 4
Archaludon's Defense rose! (+4 Def)
Archaludon used Dragon Tail! (-3 EN)
Miss (10, d10): 5 (No), Crit (1, d24): 13 (No)
(6 + 4 + (8 - 5))*1 = 13
Clodsire was phazed! (Phazing)

Clodsire munched on the Leftovers! (+4 HP)
Step 2
Archaludon used Dragon Pulse! (-3 EN)
Crit (1, d24): 24 (No)
(9 + 4 + (9 - 7))*1 = 15
Clodsire used Earth Power! (-3 EN)
Crit (1, d24): 23 (No), Drop (1, d10): 2 (No)
(9 + 4 + (4 - 5) - 1)*1.5 => 17
Archaludon fainted!

Clodsire munched on the Leftovers! (+4 HP)
Round Summary

HP: -13+4-15+4 = -20

EN: -3-3 = -6

HP: -4-17 = -21

EN: -3-3 = -6