There is no Pike currently in the game, but it’ll be in fact added next. The assets are done already.
With the exception of hidden enemies blocking ranged attacks since 0.4.0.40, the hitchance % shown in the tooltips are accurate, as they’re the same that are used for calculating hits and misses. The game uses Mersenne Twister (MT19937) as RNG for equidistributed numbers. Feel free to suggest a fitting alternative.