After recording HP of Shaper, Agent, Guardian at Lv1~Lv15 w/ End=3~11, I get a formula which is more consistent with other 2:
HP = RoundDown( Base + (Modifier * (End + 1) + 5) * (Lv + 1) )
Large Modifier=7/8
Medium Modifier=6/8
Small Modifier=5/8
Base is the same as (base listed in #1 - 5).
Therefore the table becomes:
CLASS ESSENCE SPELL ENERGY HIT POINTS
------------ -------- --------- ---------
Guardian 40 + 6/8 20 + 8/8 19 + 7/8
Warrior 10 + 7/8 20 + 8/8 23 + 7/8
Servile 10 + 6/8 16 + 8/8 25 + 7/8
Agent 10 + 7/8 20 + 14/8 15 + 6/8
Infiltrator 10 + 7/8 28 + 14/8 15 + 6/8
Sorceress 10 + 7/8 20 + 14/8 23 + 5/8
Shaper 10 + 8/8 20 + 12/8 15 + 5/8
Lifecrafter 10 + 8/8 28 + 12/8 15 + 5/8
Shock Trooper 10 + 8/8 20 + 14/8 23 + 6/8
Conclusion:
Previous conclusion that End is useless still holds.