Gibbets 4 is essentially a fairly straight-forward game, though there are orbs you can shoot that will then shoot out an arrow themselves in a specific direction, as well as score multipliers, extra bonus arrows, teleporters, and more. In general, it's all about timing and aiming, and it does a fine job of being challenging in its execution without straying into the realm of obnoxiously difficult.
Itself is poorly made or inherently bad in any way, or that you yourself have to be in order to enjoy it. You've got a bow and arrow you can click and drag on to aim and fire, and you're aiming to not only take out any overzealous hangmen in each stage, but to rescue each unjustly hung soul with a well-placed arrow to sever their noose before their health bar runs out. If you miss and accidentally take someone's eye out, and therefore a chunk of their health, you're supposed to be duly horrified and not laugh like a deranged hyena.