I completely agree with you, I'll post a new version with changed controls (instead of right clicking, i'll use a mouse dragged event) and also something to see the bounds of the tiles
Hey ! Thanks for your rating :) , the increase in speed on level 4 is intentional so that you can avoid the snipers bullets but for the player that leaves the screen I'll have to change that. Thanks for the tips ;)
Thanks a lot for your comment. Yes I must admit those controls are not really efficient, I'll add a new version today with changed controls and a UI so that you can change the different keys. And once again thank you !