Hi gmx0,
first of all I have to thank you for playing Marine2D: thanks to you we managed to exceed 100 plays this week, you know?! The first milestone for this game :)
The tutorial is actually very sparse; There is currently a little button down in the game menu that activates screens for the game's mechanics.
I don't mind the idea of activating icons above the monsters or the character, when the tutorial is active, at all. I think I'll upgrade it when there's a rework of the icons. this was before the beta release.
On Monday there will be a small patch for some errors I encountered and the milestone announcement.
Thanks for your involvement!!!
p.s. I hadn't even thought about a download version. I will release the final game for different platforms: Apple, Win, Linux, Android. steam etc... but if it is much more useful, at this stage I could make a download version :)