ok thanks for your feedback, that is more constructive i can understand that with the UI.
i already had some enemy chase mechanic in, but it is kind of hard to balance the speed between player and enemy on such a "small" game area, therefor i didn`t put it in in the end - did`t satisfy me.
in the next build there is already a tresure chest on the ship, and each gold you pick up is kind of "heavy" so you get slower. which increases the difficulty because you need more time to get back to the surface and also are not as flink to avoid the "stupid" enemys. you have to get back to the boat because you need to drop your gold into the chest, loose the weight and gain the speed back.