Harriers picked up their first win of the season on Saturday with a 2-1 win over FC United of Manchester - see match highlights here.
That win followed two concerning defeats to Chorley and then Nuneaton Town, but now Kiddy are on the board.
Tonight they host Leamington, who have lost back-to-back home games, having won at Gainsborough Trinity on the opening day.
"They had a fantastic season last season and congratulations to them for getting back to this level," said Eustace.
"They may be new to the division for this campaign but they’re actually a squad and management team that knows all about it.
"Their squad is full of experienced players who have performed at this level and above and, as a group, they have that advantage of having had a promotion with each other last season.
"It’s a big challenge for us to go up against that in search of three points."