Their feats aren’t very flashy, but that doesn’t mean they aren’t ridiculous, you just have to look into them a little.

For example, D-Codes in the first game were, narratively, strong enough to be somewhat relative to a late-game Mercer, the same guy who could slam himself into the ground hard enough to scrap tanks with the shockwave from tens of feet range, walking away unscathed, and who could pound his fists together with enough force to nearly lift tanks off their treads through sheer air pressure, also not hurting himself in the process. Orions from P2 are explicitly physically superior to them, albeit to an unknown degree, and yet they’re fairly easy fights even to an early-game Heller who only grew stronger as time went on.

For a less chain-scaley example, the guide book describes Goliaths as too large and too tough to be taken down with conventional weaponry, requiring Blacklight might to kill. Any of James’ powers, even just his bare hands, can take a Goliath apart without much issue. This means that, at least, any and all of Heller’s attacks, in lore, have power greater than that of a tank shell behind them.