to get back on topic...I played with the Nova Cat version in MegaMek a bit and while I liked its design in MW4: Mercs, in 'Mech games I go assault or go home (in the HBS Battletech, I have a scout Atlas...apparently I'm Lyran at heart), this little scrapper is one of my new favorite 'Mechs. It almost feels like a Medium version of the Nova Cat (and basically is a Night Gyr minus 15 tonnes) in that while the former is a pocket Assault, boasting range, damage, and armor that can compete 1v1 against 'Mechs far heavier than it, the Hellcat is a pocket Heavy. It's well-armed, well-armored, well-sunk, and slow. Even with 'only' the clan XL, it has compromised vulnerability, but its ability to strip off 20 points of armor at 25 hexes is no joke, and when combined with an accurate dice-roller and a proven close-range critseeker makes it a priority target.
Long story short: it's a fun, cool-looking, terrifying murderer of a 'Mech.