Oh my god...:smile16: :smile16: :smile16: :( :( :(
The Lava Elemental is quite acceptable and fits the theme; I've already explained why there are no archers. As for the abilities – they are based on the game (I don't really want to change what I didn't come up with myself...), Fire Spit and some other thing – these are completely new, what's next?;) ;) ;)
P.S.: Please, ask all your questions at once, because you write so rarely...:(

It sounds like a Lava Dragon, but a lower level))) Okay.
Abilities – a couple of units should have unique abilities, like the Lava Dragon having a Lava Shield instead of fire, like the ability of the Trolls – Chain Lightning, like the Bear Riders – Claw Strike, like the Berserkers – their Berserk ability, like the Mountain Guards – their ability to reduce damage from running... In general, almost all units – at least 5 – should have their own unique abilities that haven't been seen before, but it's extremely difficult to come up with new, original, but suitable abilities for the Fire race.
P.S. I write in many topics and can't focus on just one – ask other critics, and you'll see that I'm not the only one who thinks this way...