public void onMonsterDeath(Player player, NPC n) {
        player.getSkills().addXp(Skills.SLAYER, n.getCombatDefinitions().getHitpoints() * 10);
        monstersLeft--;
        int[] checkpoints = new int[]{1, 2, 3, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50};
        for (int i : checkpoints) {
            if (monstersLeft == i) {
                player.getPackets().sendGameMessage(
                        "You're doing great, Only " + monstersLeft + " "
                        + getTask().simpleName + " left to slay.");
                player.hasTask = true;
            }
        }
        if (monstersLeft < 1) {
            player.setSlayerTaskAmount(player.getSlayerTaskAmount() + 1);
            int[] get50Points = new int[]{10, 20, 30, 40, 60, 70, 80, 90, 110, 120, 130, 140, 150, 160, 170,
                180, 190, 210, 220, 230, 240, 260, 270, 280, 290, 310, 320, 330, 340, 350, 360, 370, 380, 390, 410, 420,
                430, 440, 460, 470, 480, 490};
            int[] get100Points = new int[]{50, 150, 250, 350, 450, 550};
            int[] get500Points = new int[]{100, 200, 300, 400, 500, 600};
            int[] get10Points = new int[]{10, 20, 30, 40, 60, 70, 80, 90, 110, 120, 130, 140, 150, 160, 170,
                180, 190, 210, 220, 230, 240, 260, 270, 280, 290, 310, 320, 330, 340, 350, 360, 370, 380, 390, 410, 420,
                430, 440, 460, 470, 480, 490, 50, 150, 250, 350, 450, 550, 100, 200, 300, 400, 500, 600};
            for (int ii : get50Points) {
                if (player.getSlayerTaskAmount() == ii) {
                    if (player.getSlayerMaster() == 1) {
                        player.setSlayerPoints(player.getSlayerPoints() + 3);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 3 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 2) {
                        player.setSlayerPoints(player.getSlayerPoints() + 5);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 5 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 3) {
                        player.setSlayerPoints(player.getSlayerPoints() + 38);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 38 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 4) {
                        player.setSlayerPoints(player.getSlayerPoints() + 60);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 60 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 5) {
                        player.setSlayerPoints(player.getSlayerPoints() + 125);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 125 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    }
                }
            }
            for (int iii : get100Points) {
                if (player.getSlayerTaskAmount() == iii) {
                    if (player.getSlayerMaster() == 1) {
                        player.setSlayerPoints(player.getSlayerPoints() + 5);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 5 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 2) {
                        player.setSlayerPoints(player.getSlayerPoints() + 10);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 10 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 3) {
                        player.setSlayerPoints(player.getSlayerPoints() + 75);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 75 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 4) {
                        player.setSlayerPoints(player.getSlayerPoints() + 125);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 125 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 5) {
                        player.setSlayerPoints(player.getSlayerPoints() + 250);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 250 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    }
                }
            }
            for (int iiii : get500Points) {
                if (player.getSlayerTaskAmount() == iiii) {
                    if (player.getSlayerMaster() == 1) {
                        player.setSlayerPoints(player.getSlayerPoints() + 10);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 10 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 2) {
                        player.setSlayerPoints(player.getSlayerPoints() + 15);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 15 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 3) {
                        player.setSlayerPoints(player.getSlayerPoints() + 150);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 150 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 4) {
                        player.setSlayerPoints(player.getSlayerPoints() + 250);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 250 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 5) {
                        player.setSlayerPoints(player.getSlayerPoints() + 500);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 500 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    }
                }
            }
            for (int iiiii : get10Points) {
                if (player.getSlayerTaskAmount() != iiiii && player.hasTask == true) {
                    if (player.getSlayerMaster() == 1) {
                        player.setSlayerPoints(player.getSlayerPoints() + 1);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 1 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 2) {
                        player.setSlayerPoints(player.getSlayerPoints() + 2);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 2 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 3) {
                        player.setSlayerPoints(player.getSlayerPoints() + 10);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 10 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 4) {
                        player.setSlayerPoints(player.getSlayerPoints() + 15);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 15 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    } else if (player.getSlayerMaster() == 5) {
                        player.setSlayerPoints(player.getSlayerPoints() + 18);
                        player.getPackets().sendGameMessage("You have completed " + player.slayerTaskAmount + " Slayer Tasks in a row and receive 18 Slayer Points!");
                        player.getPackets().sendGameMessage("You have finished your slayer task, talk to a slayer master for a new one.");
                        player.hasTask = false;
                    }
                }
            }
        }
    }
}