you should make the laser stop accelerating... When u get higher ther are alot more spikes, so it's already hard enough to time your jumps right without a red laser burning ur ass at the same time
Who needs a strategy, just do a complete upgrade and you'll be indestuctable muahahahahahaha.... sorry for the evil laugh... NOT! muahahahahaaaaaaaaaaaaa
To defeat the boss, make sure you approach him from the top or the bottom. That way he cant hit you with his hammer before you get to him. If you aren't able to do this because of him following you, run away from him as far as possible while making a zigzag motion. When the arrow isnt following you anymore return from the top/bottom and kill him. Make sure you use combo's and keep approaching him from the top/bottom. This way you shouldn't have any problems defeating him.
I've had a map right next to it and sometimes the markers werent on the location my map indicated o.O and how are we supposed to get a perfect strike... that's just pure luck -.-